Geology and vertebrate paleontology of Tule Springs Fossil Beds National Monument, Nevada, USA

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Abstract

Tule Springs Fossil Beds National Monument (TUSK) preserves 22,650 acres of the upper Las Vegas Wash in the northern Las Vegas Valley, Nevada, USA. TUSK is home to extensive and stratigraphically complex groundwater discharge (GWD) deposits, called the Las Vegas Formation, which represent springs and desert wetlands that covered much of the valley during the late Quaternary. The GWD deposits record hydrologic changes that occurred here in a dynamic and temporally congruent response to abrupt climatic oscillations over the last ~300 ka (thousands of years). The deposits also entomb the Tule Springs Local Fauna (TSLF), one of the most significant late Pleistocene (Rancholabrean) vertebrate assemblages in the American Southwest. The TSLF is both prolific and diverse, and includes a large mammal assemblage dominated by Mammuthus columbi and Camelops hesternus. Two and possibly three distinct species of Equus, two species of Bison, Panthera atrox, Smilodon fatalis, Canis dirus, Megalonyx jeffersonii, and Nothrotheriops shastensis are also present, and newly recognized faunal components include micromammals, amphibians, snakes, and birds. Invertebrates, plant macrofossils, and pollen also occur in the deposits and provide important and complementary paleoenvironmental information. This field compendium highlights some of the classic stratigraphic sequences of the Las Vegas Formation within TUSK, emphasizes the significant hydrologic changes that occurred in the area during the recent geologic past, and examines the subsequent and repeated effect of rapid climate change on the local desert wetland ecosystem.

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Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Geology and vertebrate paleontology of Tule Springs Fossil Beds National Monument, Nevada, USA
ISBN 9780813756455
DOI 10.1130/2017.0045(01)
Volume 45
Year Published 2017
Language English
Publisher Geological Society of America
Contributing office(s) Geosciences and Environmental Change Science Center
Description 30 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Field excursions in Southern California: Field guides to the 2016 Geological Society of American cordilleran section meeting
First page 1
Last page 30
Country United States
State Nevada
Other Geospatial Tule Springs Fossil Beds National Monument