--> Abstract: Stratigrapy and Echinoderm Paleontology of the Bird Spring Formation at Lovell Wash Canyon, Clark County Nevada, by Jeffrey Thompson; #90199 (2014)
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Stratigrapy and Echinoderm Paleontology of the Bird Spring Formation at Lovell Wash Canyon, Clark County Nevada

Jeffrey Thompson
Earth Sciences, The University of Southern California, Los Angeles, CA, USA
[email protected]

Abstract

The Bird Spring Formation is know from the Mississippian through Permian of Southwestern Nevada and California. It is characterized primarily by thick, massive, not easily differentiable, limestones and dolostones and dependent upon the Previous HitsectionNext Hit, contains the Mississippian-Pennsylvanian and Pennsylvanian-Permian boundaries. The formation is known to contain a number of microscopic and macroscopic fossils including fusulinids, conodonts, brachiopods, bryozoans, crinoids and echinoids. It has long been thought that Echinoids are fairly rare constituents of Upper Paleozoic benthic communities, however, recent work indicates that they may be more important members of Upper Paleozoic communities than previously thought. A new, relatively unstudied Previous HitsectionNext Hit of the Bird Spring Formation, approximately 250 M thick, has been found at Lovell Wash Canyon in Clark County, Nevada and this new Previous HitsectionNext Hit provides an excellent framework for the testing of hypotheses regarding the abundance and ecological dominance of Paleozoic echinoids and the effects of diagenesis upon the rocks and fossils of the Bird Spring Formation. The primary lithology at this Previous HitsectionNext Hit is dolostone and many of the fossils present have been silicified. The Previous HitsectionNext Hit will be measured in the field and samples will be collected for in lab petrographic Previous HitthinNext Hit Previous HitsectionNext Hit Previous HitanalysisNext Hit and for biostratigraphic Previous HitanalysisNext Hit with fusulinids and conodonts. The Previous HitthinNext Hit sections will be used to study the diagenetic effects of dolomitization and silicification on the fossils and rocks within the Previous HitsectionTop in hopes to better understand the conditions that lead to carbonate diagenesis.

AAPG Search and Discovery Article #90199 © 2014 AAPG Foundation 2014 Grants-in-Aid Projects