Arizona Geological Survey OPEN-FILE REPORT OFR 08-06
Arizona Geological Survey OPEN-FILE REPORT OFR 08-06
Arizona Geological Survey OPEN-FILE REPORT OFR 08-06
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<strong>Arizona</strong> <strong>Geological</strong> <strong>Survey</strong><br />
Table of Contents<br />
ABSTRACT ..................................................................................................................................................... iv<br />
INTRODUCTION ............................................................................................................................................. 5<br />
Background ............................................................................................................................................... 5<br />
Location ..................................................................................................................................................... 5<br />
Debris flows............................................................................................................................................... 6<br />
Terminology .......................................................................................................................................... 6<br />
Initiation ................................................................................................................................................ 7<br />
Rheology ............................................................................................................................................... 8<br />
GIS‐Derived Basin Characteristics ......................................................................................................... 9<br />
METHODS ...................................................................................................................................................... 9<br />
GIS‐Derived Basin Characteristics ............................................................................................................. 9<br />
Geologic Mapping of Debris‐Flow Deposits ............................................................................................ 10<br />
Generalized Map Unit Descriptions .................................................................................................... 13<br />
Numerical Age Dating of Debris‐Flow Deposits ...................................................................................... 16<br />
Radiocarbon Dating............................................................................................................................. 16<br />
Cosmogenic Dating ............................................................................................................................. 16<br />
Sample Collection ............................................................................................................................... 17<br />
Sample Preparation ............................................................................................................................ 18<br />
Analysis of Targets .............................................................................................................................. 19<br />
RESULTS ...................................................................................................................................................... 20<br />
GIS‐Derived Basin And Stream Characteristics ....................................................................................... 20<br />
Geologic Mapping ................................................................................................................................... 23<br />
Agua Caliente‐La Milagrosa‐Molino Canyons ..................................................................................... 23<br />
i
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