Saddlebag Lake Pendant (SLP), a zone of hydrothermally-altered, Ordovician-Cretaceous metasedimentary and metavolcanic rocks intruded by the Cretaceous Tuolumne Intrusive Complex (TIC) in California’s Sierra Nevada, was deformed by the Cretaceous Sierra Crest Shear Zone (SLSZ). Unlike other Sierra Nevada pendants, both δ18O and δD values from SLP show great variability, with most samples in isotopic disequilibrium. Mineral δ 18O and δD values range from –1.5‰ to +16.1‰ and –140‰ to –67‰, respectively. All TIC isotopic compositions indicate normal magmatic values. Most Paleozoic units record internally-generated metamorphic fluids. Jurassic metasedimentary and Triassic metavolcanic rocks have great isotopic variability with calculated fluid δ 18O and δD values that range from –2.6‰ to +15.2‰, and –106‰ to –25‰, respectively. All low isotope values are from the SLSZ at Sawmill Canyon. Isotopic data suggests these units were affected by magmatic waters generated by TIC crystallization, and subjected to localized infiltration of meteoric-hydrothermal fluid at Sawmill Canyon.
|Advisor:||Holk, Gregory J.|
|Commitee:||Kelty, Thomas K., Paterson, Scott R.|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 56/01M(E), Masters Abstracts International|
|Keywords:||Fluid-rock, Isotope, Rock, Saddlebag LOake Roof Pendant, Sierra Nevada, CA, Stable|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be