Big Sur (.pdf file) - Cal Poly Pomona

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50.0 Vincent Creek Bridge50.1 Small, indistinct outcrop of serpentinite.50.6 Outcrop of red jasperoidal chert east of highway.52.3 Big Creek Bridge.52.9 Franciscan greenstone (be careful crossing traffic!) – STOP 4Really large Franciscan greenstone lenses, approximately 2 km long.Subhorizontal flow layering is well displayed. Abundant calcite + epidote veins andhydrothermal alteration. Note the abundance of well developed vertical fractures andimagine how these might have formed as a during plate divergence. The beautifulpreservation of this piece of seafloor suggests the processes of subduction and accretiondid little to overprint this tectonic block.Outcrop of serpentinite. Note the vertical fractures in the center of thephoto and large calcite-epidote vein to the right. Randal for scale.
54.0 Franciscan deep-water sedimentary units – STOP 5Very well indurated, disrupted Franciscan graywacke, siltstone, and dark shale. Typicaltectonic mélange according to Ernst. We (your authors) didn’t find this stop all thatinstructive, but it is worth a brief look!56.8 Esalen Institute (Home of Primal Scream Therapy) - The word itself summons uptantalizing visions of adventure, of human possibilities yet to be realized. There is thewonder of the place itself, 120 acres of fertile land carved out between mountain andocean, blessed by a cascading stream and hot mineral springs gushing from a seaside cliff.There is the delicate and subtle Big Sur air of an afternoon in May, the midnight mist ofJuly, the drenching February rain as well as the ticks that get in your pants (rightLeianna?).57.1 Approximate location of crossover from Sur-Obispo block into Salinian block.58.0 Great Valley Sequence – STOP 6Fantastic exposure of coarse conglomerate of the Great Valley Series (see photo below).Such exposures are rare in the Salinian block, but much more common to the east of theSan Andreas fault. Locally, the conglomerate appears to be transected by medium-grained,cm-thick alaskite stringers. Really???The Great Valley Sequence ranges in age from Late Jurassic to Cretaceous. It crops out asthick, monotonously bedded sections of strata that generally are markedly less deformedand more coherent than sedimentary sections of the Franciscan and also have greaterlateral continuity. Where most fully developed, such as along the west side of the northernGreat Valley, the aggregate stratigraphic thickness of Great Valley sequence is at least 12km. The strata normally lie depositionally on Coast Range ophiolite except wheredisrupted by faults, but along the east side of the Great Valley they onlap the Nevadanterranes of the Sierra Nevada. This enormous thickness of clastic detrital materialprobably represents submarine fans and turbidite deposits that formed as a result of rapiderosion of the ancestral Sierra Nevada and, hence, is thought to represent “classic” oceantrench sediment.60.0 Entrance to Julia Pfeiffer Burns State Park. A good place for a rest stop and the hike toMcWay Falls (see photo below) is well worth the trip. If you make the hike be sure tolook for the outcrop of Miocene Monterey Formation porcellanite.Cretaceous Great Valley Conglomerate. Clastsappear to be largely granite derived from theSierran arc (?).McWay Falls at Julia Pfeiffer Burns State Park.
Page 1 and 2: Cal Poly - PomonaGeology ClubSpring
Page 3 and 4: 0122 00'0122 45'0121 30Peninsula Ge
Page 5 and 6: Big Sur Field Trip Road log and Fie
Page 7: difference in vegetation on each si
Page 11 and 12: medium-grained inclusions or metadi
Page 13 and 14: Pinnacles National MonumentWe will
Page 15 and 16: Geology of the Central California C
Page 17 and 18: The More Complex ViewNumerous studi
Page 19 and 20: To strike slip or not to strike sli
Page 21: Sedimentsred radiolarian chert& gre
Page 25 and 26: *HRORJ\²
Page 27 and 28: The Southern Coast Rangesby Ben Pag
Page 29 and 30: AN EXCERPT FROM:LANDSLIDES IN THEHI
Page 31 and 32: years and damaged the highway. A la
Page 33 and 34: McWay Canyon to Castro Canyon P.M.
Page 35: CONCLUSIONHighway 1 traverses an ar

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