Parents' Guide to Summit County - Summer 2021 Edition

Parents’ Guide to
Summit County
Summer 2021
Kid-Friendly Trail Games
Best Apps for Exploring
the Outdoors
Keystone Science School
1053 Soda Ridge Rd.
Keystone, CO 80435
Six Summer Events
You Can’t Miss
Stargazing, Geology,
Activites, and More!
(970)468-2098
Support@KeystoneScienceSchool.org
Since 1976

ABOUT KEYSTONE SCIENCE SCHOOL
Keystone Science School inspires curiosity and critical thinking through the lens of
science to change lives and strengthen communities. We create future leaders who can
problem solve and work together in an ever-evolving world and workplace environment.
SUMMER CAMPS OUTDOOR EDUCATION RENTALS & RETREATS
Experience the Rocky Mountains of
Colorado through our traditional Day
Camp and Overnight Camp or the
excitement of traveling Discovery
Adventures and Expeditions.
Since 1976, KSS has been providing
K-12 schools with unique overnight
field trips. Each outdoor education
and environmental education
program we create is tailored to the
goals of each participating school.
Whether your group is looking for
overnight accommodations, prepared
meals, or facilitated activities,
Keystone Science School is the
perfect location for all your retreat
needs within a budget you can afford.
OUR CAMPUS
At an elevation of 9,200 feet, Keystone Science School’s
Pennington Campus is nestled in Colorado’s Snake River
Valley. The 23-acre campus is built on the site of the Old
Keystone Village, a former railroad and sawmill site, which
supported silver and gold mining.
Today, majestic mountain ranges provide a dynamic
setting for learning about the rich natural and cultural
history of Summit County. Our facilities include modern
log-style dormitories, a central dining hall, classroom
space, an outdoor amphitheater, and an observatory.
PAGE 1

5 KID-FRIENDLY TRAIL GAMES
Keystone Science School works
with campers and students of
all ages. Whether it’s with our
summer camp or school-based
outdoor education programs, we
are always hiking with children.
Hiking outside is an amazing
opportunity to explore the
outdoors and push physical
boundaries. We have found
that sometimes our campers
and students need their minds
diverted from hiking and the
physical challenge.
Here’s a short list of some of
our favorite trail games. These
games all require little to no
materials and can help young
hikers make it to whatever
destination is on the adventure
agenda of the day.
1 2
WANDERING WANDA
Next time you’re hiking, grab a
clothespin/binder clip/carabiner
to play Wandering Wanda! We’ll
call that clothespin, “Wanda.” One
person stealthily passes Wanda
off to someone else without them
noticing. Wanda must be clipped to
an article of clothing. Once Wanda
is found, repeat & see who can be
the sneakiest when passing Wanda
around!
LOOK 3FOR BUGS IN A STREAM
Ever wondered what bugs live in
local streams? Take a trip & see what
you find! Many aquatic insects live
attached to rocks on stream beds.
Grab some rocks from the stream, flip
them over, and use a magnifying glass
to observe the insects you find. Can
you identify the insects you find?
Do you want a brief
explanation of an acorn?
Well.. In a nutshell,
it’s an oak tree.
MEET 5A TREE
Start by blocking someone’s vision
with a blindfold or ask them to close
their eyes. Safely guide them to a
tree. Using observation skills, examine
the tree with no sense of vision. Does
the tree smell, how does it feel, can
you feel branches, leaves, or needles?
Safely guide them away from the tree
and have them open their eyes. Now
have them try to find the same tree
with restored vision.
CAMOUFLAGE
One person, “the caller” stands still,
and closes their eyes for 30 seconds
while everyone else hides where they
can still see “the caller.” At the end
of 30 seconds, “the caller” names
people they find without moving.
Repeat for 20 seconds and 10 seconds
making individual rounds. Within
each round, the hiding people are to
get closer and closer to “the caller,”
without being found. The goal is to
tag or get as close as possible to “the
caller” by the last round.
SHARE 4THE ‘LOVE’
Before you venture out on your next
long group hike, go to the store and
get an amazing snack. It could be a
sleeve of cookies or your favorite
dessert snack. Now wrap it up in
tin foil and write ‘LOVE’ on it with a
marker. Announce at the beginning of
the hike that we each have to share
in the burden of carrying the ‘LOVE’
and can only open it by a unanimous
decision... Which usually happens at
an amazing lookout or the summit! It
always lifts spirits and gets the energy
back in your system.
PAGE 2

SUMMER SUMMIT COUNTY GUIDE
HELPFUL TIPS FOR HIKING
IN SUMMIT COUNTY
Hiking is one of the best activities that Summit County has to offer during the Summer months. Not only
is the mountain scenery pristine, but there are enough options to keep you hiking for years. Before you hit
the trail with your family or friends, read these tips to make the most of your outdoor adventure!
Sunscreen
One of the best parts of Colorado in the
summertime is all the sunshine… but the high
elevation means that it can cause sunburns quicker
and deeper. Apply sunscreen at least every 2 hours
while outside to prevent any painful burns.
Water, water, and more water
Summit County is known for high elevations and
dry conditions: two factors that can cause major
dehydration. Whenever you go out on a hike,
especially if it’s a long one, be sure to pack at least
2 water bottles!
BEST APPS FOR
EXPLORING THE
OUTDOORS
At Keystone Science School,
we live, work, and play in the
Colorado mountains. While
we value “screen-free” time,
we also utilize technology to
help get us outside to hike,
bike, climb, ski, and play.
Here are our favorite outdoor
apps for Android and iPhone
that let us explore the
outdoors safely. What are
your favorite outdoors and
adventure sports apps? Send
us an email and let us know!
WEATHER CONDITIONS
• OpenSnow
• OpenSummit
• CAIC
• MyRadar
• Klara
• Accuweather
• Summit County Trail
Conditions
• CO Trip
OUTDOOR SPORTS
• COTrex
• Strava
• Trailforks
• Mountain Project
• MTB Project
• Hiking Project
Bring a Rain Jacket
Weather in the mountains can change in an instant.
The sun can be hidden behind a cloud lowering
the temperature by 15 degrees or an afternoon
rainstorm can surprise you around the next corner.
Don’t be caught off guard - pack a raincoat in your
day pack and enjoy all the spontaneous weather
Summit County has to offer!
Hike Early
In the summertime, thunderstorms tend to roll
into Summit County around 2 pm. Particularly
if you’re planning to hike above treeline, you’ll
want to get out there early so you don’t get stuck
anywhere when there’s lightning around! Plus it’ll
help you avoid large crowds in the more popular
areas.
Practice Leave No Trace!
It’s important to maintain and respect our outdoor
spaces. There are seven principles of Leave No
Trace, but the basics are: pick up any litter you see
along the way, leave anything you find in nature
where it is, hike on trail, and avoid interactions with
wildlife.
Plan Ahead
Make sure to do research about the trail you’re
headed out on (we recommend apps like AllTrails
and Colorado Trail Explorer) and tell someone
where you’re going if you plan on hiking alone.
MAP & GPS
• Gaia GPS
• Google Maps
• CalTopo
FLORA & FAUNA
• Gaia GPS
• Google Maps
• CalTopo
PAGE 3

ADVENTURE, NOT JUST FOR THE KIDS!
So you just dropped your precious cargo in
the hands of super qualified and awesome
Keystone Science School counselors and…
now what? Well, it’s time to start enjoying
that well-earned time for yourselves and
you better hurry up because there is way
too much to do in this neck of the woods
and you don’t want your kids to have more
fun than you.
From the top of Loveland Pass to the edge
of Green Mountain Reservoir, from the
back of Keystone Mountain to the south
of Breckenridge, and the towns of Frisco,
Dillon, and Silverthorne all connected by
the Dillon Reservoir (Lake Dillon), you are
set up for a mountain adventure even if
you never leave your car.
If your legs are up for it, a bicycle is an
awesome mode of transportation to
explore Summit County. The bike trails,
paved and dirt are endless. If you are
driving here to Keystone, bring those bikes.
You will have more options to explore from
wherever you land. Your feet can also access
these same trails too.
Lake Dillon or Green Mountain reservoir
can be a great option for kayaking, paddle
boarding, fishing, sunbathing, or for just
relaxing. Lake Dillon has rentals in Frisco
and Dillon for kayaks, paddleboards, pontoon
boats, and sailing. Sitting and reading
a book and watching the sailboats with
snow-capped mountains around you is also
a respectable activity.
Maybe golf is your deal? Summit County
has a lot of choices including Keystone
Ranch, and The River Course right here in
Keystone--basically right next door to your
kid’s awesome camp. Don’t forget that the
ball also travels a little further at 9000 feet.
Are you a history buff? Check out the
Breckenridge Heritage Alliance, the Dillon
County Historical Society, or The Summit
Historical Society. There are numerous
books on the adventurous people who
settled in this area. The historical sites in
the county are numerous and some offer
guided tours.
When your belly starts rumbling, don’t
forget about horseback ride dinners, picnicking
on a trail or side of the road with
beautiful views! Maybe dinner along the
shores of Lake Dillon or at the top of a ski
resort with help of a chairlift?
Are you the camping type? Tent or RV?
You are in the right place. Sleeping under
the stars at 9000ft is a must. Visit the
Dillon Ranger District office in Silverthorne
to plan your trip and explore maps of our
area.
Summertime in Colorado means blue skies,
long days, and the sun shining bright till
early evening. Take advantage of each day
and we are sure you will have as good a
time as your kids are having at KSS!
PAGE 4

MAKE A NATURALIST OBSERVATION
Take a step into becoming an expert observer of
our natural world by making a naturalist
observation. Find a place in nature that you can
stop and sit for a bit. Now, pick one object or one
area to focus on.
What do you notice using your senses (seeing,
smelling, feeling, hearing)? What do you wonder
about your object or area? What does the area or
object remind you of? Once you’ve asked yourself
these questions, sketch and label what you
observed so that you can share your findings with
other nature observers. Now you’re well on your
way to becoming an expert naturalist!
Materials
Paper
Watercolors
Crayons
Colored Pencils
Clipboard
Pro Tip
Tune into your senses other
than sight by closing your eyes
to listen, smell, and feel your
surroundings.
Share your finished
work with KSS!
Share your finished work
with KSS! Upload a photo
of you and your completed
observation to Instagram or
Facebook, mention
@KeystoneScienceSchool
for a chance to win a KSS
water bottle!
Summer
Stargazing
By “Astro” Mark Laurin
Summit County’s night skies are crystal clear, dark, steady, and full of mystery –
everything you need for perfect summer stargazing. But, what to look for? Here are
three of my favorite summer stargazing gems. Why these? They’re easy to find, you
don’t need binoculars (but a compass helps), and you can view them throughout
summer. So, head outside, use the next page as a guide, and look up!
OUR HOME, THE MILKY WAY
The solar system we live in is part of the
galaxy named the Milky Way. Its name
describes what we see from earth when we
look up and notice a hazy band of light. This
band is made up of millions upon millions
of stars, and in summer it begins at the
northeastern horizon arching completely
overhead to arrive at the southern horizon.
As you do this, you’ll see dark black patches
and lanes that appear as clouds. These clouds
are Nebulas, where gravity compresses
cosmic dust so densely that light from the
stars behind the Nebulas is blocked from
reaching us. Look at the edge of the band to
see starlight “peeking” through it, and areas
where the Nebula is thinner and lighter.
PERSEIDS METEOR SHOWER: JULY – AUGUST
This meteor shower is summer at its best!
The shower happens when the earth makes it
annual journey through the debris field of an
ancient comet. The shower peaks August 9th
– 14th with a possible 60 meteors per hour.
Near midnight they will graze the earth’s
atmosphere creating long bright trails and
fireballs.
To look where the meteors will come from,
start at the northeast horizon of the Milky
Way band and slowly follow the band south.
Look to the right of the band for a bright
collection of stars that resemble the letter
“W.” From there, look straight down towards
the horizon again for a backwards capital
letter “J” or a fishhook. Get a chair and
blanket, be patient and enjoy the show!
SAGITTARIUS’ TEA POT
Follow the Milky Way to where it touches the
southern horizon. In June the constellation
Sagittarius rises and will remain visible
throughout summer. Inside Sagittarius is the
Tea Pot asterism. This is a grouping of stars
that form the shape of its name. In this case
it’s a tea pot.
The pot is tipping down, with its handle to
the east and its spout lower in the west. Once
you find it, look for a bright concentration
of stars seeming to rise like steam from the
spout as teapot. Once you find that, look a
little bit up. You’ll see a patch of sky that is
clearly brighter. That patch is the very center
of our home galaxy. Pretty cool!
PAGE 5

SUMMER STAR MAP
CREATE YOUR OWN CONTELLATIONS.
THEN GO FIND THEM IN THE NIGHT SKY!
NORTH
CASSIOPEIA
EAST
MILKY WAY
SUMMER TRIANGLE
POLARIS
“THE NORTH STAR”
LITTLE DIPPER
FOLLOW TO FIND POLARIS
BIG DIPPER
FOLLOW ARC
TO ARCTURUS
WEST
ARCTURUS
SAGITTARIUS’ TEA POT
SOUTH
PAGE 6

Keystone Science School
BINGO
1 2
3
4
5 6
1. Or, head to the FIRC Thrift Store
and put together a full pirate outfit!
2. Learn more about the healthy
eating curriculum as part of our
After School program.
3. If only there were an amazing
lake nearby...
4. The Hot Pink Gorilla is often
seen on or near the KSS campus.
5. Self Explanatory
6. @KeystoneScienceSchool
on Instagram and Facebook
PAGE 7

SIX SUMMER EVENTS YOU CAN’T MISS
There’s always something
fun going on in Summit
County during the summer
months as the different
towns compete for your
attention and showcase
what makes this place so
special. We’ve put together
a shortlist of family-friendly
events you should definitely
check out.
DILLON FARMERS MARKET
The Dillon Farmers Market runs every
Friday from 9am-2pm all summer long. You
can find fresh produce, yummy hot food,
bakery items, clothing, art pieces, and
more! The Farmers Market is located near
the Dillon Amphitheater and also features
beautiful views of Lake Dillon and Peak 1!
SILVERTHORNE FIRST FRIDAYS
On the first Friday of every month, the
town of Silverthorne puts on a free event
for the community. It could be music in
Rainbow Park or an Art Stroll by the Blue
River, and it’s always a great time. First
Fridays have a relaxed local vibe. You’ll
always see kids running around, families
catching up, and everyone enjoying the
awesome place we’re in!
Consider mixing in some of
these summer events with
your outdoor adventures.
For a full list of summer
events and happenings
in Breckenridge, Frisco,
Dillon, and Silverthorne,
see the ExploreSummit.com
calendar of events.
What is a Colorado
cloud’s favorite drink?
Mountain Dew
How did the egg get
up the mountain?
It scrambled!
What did one
tectonic plate say
when he bumped into
another?
My Fault!
KEYSTONE FESTIVALS
Throughout the summer, the Keystone
Neighborhood Company throws a variety
of fun food and music festivals. Typically,
the festivals include Beer & Bluegrass,
Bacon & Bourbon, and Wine & Jazz. The
festivals take place in River Run with a host
of great shops and restaurants to explore.
WAVE FESTIVAL
Breck Create holds a variety of art
festivals and special events throughout
the summer. One of their most popular
festivals is WAVE (Light + Water + Sound).
This multimedia festival features different
interactive art installations in and around
the Blue River Plaza in Breckenridge and
typically takes place around the end of
May or early June. Check out the rest
of the Breck Create website for more
exhibitions and summer events!
FRISCO BBQ CHALLENGE
The Annual Frisco BBQ Challenge packs
delicious barbeque from all over the
country, free concerts, pig races, a 6k
with a bacon aid station, chef demos,
street performers, a firefighter cook-off,
a whiskey tour, and more! It’s located
on Frisco Main Street and typically runs
sometime around the end of June.
DILLON AMPHITHEATER CONCERTS
Every week of the summer, the Town of
Dillon throws a variety of free and ticketed
concerts. Past concerts include String
Cheese Incident, the B-52s, the Colorado
Symphony Orchestra, Lake Street Dive,
DeVotchKa, and more! If music’s not your
thing, they also show free movies all
summer long.
PAGE 8

MEG’S GUIDE TO THE COMMON
FLORA OF THE HIGH ROCKIES
MEG’S GUIDE
to the Common Flora
of the High Rockies
-Meg Quirk-
Pick up a copy, then find a great hike
in this guide, and make a naturalist
obervation. That sounds like a great day!
keystonescienceschool.org/megs-guide
Meg’s Guide is an identification book
for the common flora species found
within the montane life zone of the
Rocky Mountains.
Meg Quirk was a Keystone Science
School Program Instructor from
2018-2020 and created Meg’s Guide
to the Common Flora of the High
Rockies as a long term project (LTP).
The guide includes illustrations
of common species such as trees,
flowers, and more.
In addition, you can find adaptation
stories and wild recipes. This is a
perfect book if you are looking for a
tool to get to know your local flora
just a bit better!
Douglass Fir
Pseudotsuga menziesii
White Fir
Abies concolor
Little Rolly h
Kelly Gomez
Little Rolly is a Douglass fir living in the Rockies.
With beautiful needles and fascinating pine cones covering
his body, he was known as one of the most mighty trees
in the forest. Rolly grew up in a loving community but he
always knew he was a little different.
Although Rolly looked strong and mighty, he
secretly had a fear of fire. Growing up, he heard stories of
lightning strikes, forest fires, and destroyed communities.
He never told anyone because he wanted to remain fearless.
One day Rolly couldn’t take the pressures and exclaimed,
“I’m scared of fire!” Everyone stopped and stared. White Fir
asked, “Why? Don’t you see how thick your bark is?” Rolly
looked down and felt his cork-like trunk. “Yeah!” Look at
how unique your roots are!” Said Blue Spruce. Rolly noticed
his roots didn’t grow the same as the other
evergreen trees. Unlike the other trees, his roots
are adventitious, meaning they grow directly
out of his trunk instead of other roots.
With his thick bark and strong, sturdy
roots, Rolly realized his fear of fire was silly.
He understood that forest fires can be scary but
also beneficial. Rolly realized that he shouldn’t
let his fears prevent him from living his life.
Forest fires help in the natural cycle (called forest
succession) of forest growth and replenishment that
encourages new species to grow. Douglass Fir’s cork-like
bark helps keep it protected when forest fires are present.
Needles
Top sides have small white band
Bases look like suction cups
Rounded or blunt
Cones
Fall apart on tree
Subalpine Fir
Abies lasiocarpa
Needles
Thick at base
J-shaped
Stand up from branch
Cones
Stand up from branch
8 9
PAGE 9

SUMMER SUMMIT COUNTY GUIDE
BEST OVERLOOKS & PHOTO SPOTS
PHOTO PRO TIP
Golden hour is around an hour after
sunrise and an hour before sunset.
It’s the photographer’s best friend
and will give you that #nofilter,
professional landscape lighting.
Bonus points if you can get a shot
right after an afternoon shower
has passed. More volatile weather
means more drama which gives you
a more interesting picture.
KSS DAY CAMPER ON AN EARTH TREK
Summit County is one of the most beautiful destinations in the Country and you don’t have to trek for miles to get the most amazing
views. Some of the most picturesque landscapes are just a short walk or drive away! Take your camera, pack a picnic, and pick one
or all of these locations to check off your bucket list. These places will take your breath away, and it won’t just be the altitude.
Old Dillon Reservoir
Drive towards Frisco on the Dillon Dam Road until you reach
a trailhead to your right. Hike about a mile up to Old Dillon
Reservoir. This spot is perfect for views of both the Gore Range
over Silverthorne and Lake Dillon. Very fun for a full moon/
moonrise hike!
Loveland Pass
Drive past Keystone on Highway 9 until you reach Loveland
Pass -- also the home of the Continental Divide! There are epic
views of Arapahoe Basin ski area along with Grizzly, Cupid, and
Lenawee mountains. Feeling adventurous? The hike to the top of
Cupid Peak is steep, but short (about 1.75 miles to the top) and
offer more incredible views of Grays, Torreys, and Sniktau peaks.
Windy Point
Swan Mountain Road is one of the most beautiful drives in
Summit County. If you head from Keystone to Breckenridge,
there is a trailhead about halfway with some beautiful outlook
opportunities. If you hike up the hill from the parking lot, you’ll
reach windy point - a popular rock climbing destination and one
of the best views of the Gore Range - specifically Buffalo and Red
Mountain. Local Tip: if fire restrictions allow for fireworks on the
4th of July, this is an amazing spot to watch them!
Ptarmigan Bench
If you make a short drive from Silverthorne to the Ptarmigan
Mountain Trailhead and hike up about 2 miles, you’ll get to a
bench on the side of the mountain that’s a beautiful overlook of
Silverthorne, Buffalo and Red Mountains, and Lake Dillon.
Sapphire Point
If you pass the Windy Point trailhead and keep driving on Swan
Mountain Road, you’ll reach Sapphire Point. This point has a
gorgeous view of Peak One and there’s a nice short hike that
gives you views of Lake Dillon and the Gore Range. This is also a
good spot for wildlife - it’s been nicknamed Chipmunk Point!
Keystone Mountain
A popular activity for both locals and tourists alike is taking
a summer gondola ride to the top of Keystone Mountain. Up
there you’ll get breathtaking 360° views of Summit County, and
(depending on the time of summer) beautiful wildflowers. The
gondola ride isn’t free, but tickets can be purchased on the
Keystone Resort website.
Dillon Amphitheater
A short drive off of Highway 9 is the Dillon Amphitheater. It’s a
picture-perfect view of Lake Dillon and there’s a nice walk you
can take on the bike path on the edge of the lake.
THE BEST KID-
FRIENDLY ACTIVITIES
IN SUMMIT COUNTY
Summit County has so many
activities for families and kids that
it can be hard to keep track. We are
lucky to live in an abundant outdoor
playground with mountains, rivers,
lakes, and world-class ski resorts in
our backyard. Whether you are on
vacation with your family, a recent
transplant with young kiddos, or
have been a local for life, you can
always find something new and
fun to do! We asked our staff to
help make a list of the best kidfriendly
activities in Summit County,
Colorado.
• Horseback Riding at Keystone
Stables
• Music at Dillon Amphitheatre
• Fishing at North Pond
• Playground at Rainbow Park
• Shooting Bows at the
Archery Range
• KSS Summer Day & Overnight
Camp!
• Silverthorne First Fridays
• Hiking Trails Everywhere
• National Repertory Orchestra
Concerts for Kids
• Visit Isak Heartstone in
Breckenridge
• Alpine Coaster in Copper
• Alpine Slide in Breckenridge
• Canoeing, Kayaking, and Stand Up
Paddleboarding on Lake Dillon
• Rock Climbing
• Beach Time in Frisco
PAGE 10

SUMMER SUMMIT COUNTY GUIDE
SUMMIT COUNTY GEOLOGY
BY CHRIS WEEZNER
Summit County has truly amazing geology. This stems from all of the dynamic events that have happened
here over its geologic history. Summit County has experienced two major mountain building events,
deposition of fossil-rich sedimentary rocks, and formation of major mineral deposits like gold and silver
and molybdenum. It’s this geologic history that has made Summit County such a great place to ski, as well
as providing the rich mining history.
What do you get when
you throw a piano down
a mine shaft?
A-flat minor
CENOZOIC
PALEOZOIC MESOZOIC
HOLOCENE
10K
PLEISTOCENE
2M
PLIOCENE
5M
MIOCENE
23M
OLIGOCENE
34M
EOCENE
56M
PALEOCENE
65M
CRETACEOUS
145M
JURASSIC
200M
TRIASSIC
252M
PERMIAN
300M
PENNSYLVANIAN
318M
MISSISSIPPIAN
359M
DEVONIAN
416M
SILURIAN
443M
ORDOVICIAN
488M
CAMBRIAN
542M
PROTEROZOIC
2.5B
ARCHEAN
The Geology of the Rocks that Form
the 10-Mile Range and Gore Range
Metamorphic rocks are rocks that have been
changed (metamorphosed) by heat and pressure.
These rocks originally formed from sediments
in a shallow sea between a volcanic arc and
the continent. These types of rocks are known
as sedimentary rocks. Approximately 1.5 – 2
billion years ago, during a period known as the
Proterozoic, a collision between the volcanic
arc and the continent formed a tall mountain
range. The sedimentary rocks were buried and
formed metamorphic rocks called gneisses. In
addition, magma (melted rocks) intruded into the
sedimentary rocks and cooled to form granite.
Our Ancestral Rocky Mountains
During Pennsylvanian Period about 300 million
years ago, a series of uplifts was created by South
America colliding with North America. Erosion from
these uplifts caused large amount of sediment
to fill shallow basins.When this sediment turned
into sedimentary rock, it created the Minturn and
Maroon formations. Dropping sea level caused
evaporation resulting in the creation of gypsum
and salt. The town of Gypsum in Eagle County is so
named because of the gypsum that is mined there.
The Triassic through Cretaceous
This period of time, the Triassic, Jurassic, and
Cretaceous, are when Dinosaurs roamed the earth.
During the Jurassic, an inland sea was formed and
created the Morrison formation which can be seen
at the West end of Dillon Dam Road.
EARTH FORMS
4.6B
PAGE 11

Most Recent Geologic Time
At the beginning of the Cenozioc (the
period time from approximately 65 million
years ago to present day) the Rocky
Mountains formed (between 66 and 45
million years ago). The formation of the
Rocky Mountains is called the Laramide
Orogeny.
SUMMIT COUNTY GEOLOGY CONT.
Orogeny is a mountain building event.
Towards the end of this mountain building,
magmas intruded into the mountains
(about 44 million years ago). These
magmas were mineral rich and formed the
minerals and metals that were later mined
in Summit County.
IGNEOUS ROCKS SEDIMENTARY ROCKS METAMORPHIC ROCKS
Formed from molten magma, either
underground (granite) or above the
surface (basalt).
Formed from depositional processes
usually under the sea or by wind.
Sandstone, limestone, and shale are
three of the most common.
Started out as either igneous or
sedimentary, but were the changed
(metamorphosed) by heat and
pressure.
PAGE 12

THE SUMMER CAMP
PROGRESSION
SPECIAL THANKS TO OUR
2021 SUMMER OF CONNECTION SPONSORS
Want to see your logo here?
Get in touch! Support@KeystoneScienceSchool.org