A5076525149- Pleistocene-Era Hominins and Archaeology
- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Evolution and Paleontology Studies
- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Primate Behavior and Ecology
- Forensic Anthropology and Bioarchaeology Studies
- earthquake and tectonic studies
- Archaeology and ancient environmental studies
- Groundwater and Isotope Geochemistry
- Archaeology and Rock Art Studies
- Geochemistry and Elemental Analysis
- Wildlife Ecology and Conservation
- High-pressure geophysics and materials
- Groundwater and Watershed Analysis
- Geomagnetism and Paleomagnetism Studies
- Hydrocarbon exploration and reservoir analysis
- Landslides and related hazards
- Pacific and Southeast Asian Studies
- Clay minerals and soil interactions
- Karst Systems and Hydrogeology
- Geological and Geophysical Studies
- Groundwater flow and contamination studies
- Geological Formations and Processes Exploration
Addis Ababa University
2015-2024
Case Western Reserve University
2023-2024
National Museum of Nature and Science
2024
Adigrat University
2024
St Petersburg University
2023
Lakehead University
2023
University of Turin
1999-2000
University of Southampton
1993
Only one partial skeleton that includes both forelimb and hindlimb elements has been reported for Australopithecus afarensis . The diminutive size of this specimen (A.L. 288-1 ["Lucy"]) hampered our understanding the paleobiology species absent potential impact allometry. Here we describe a large-bodied (i.e., well within range living Homo ) that, at 3.58 Ma, also substantially antedates A.L. 288–1. It provides fundamental evidence limb proportions, thoracic form, locomotor heritage in...
Abstract The phylogenetic relationship between Australopithecus anamensis and afarensis has been hypothesized as ancestor‐descendant. However, the weakest part of this hypothesis absence fossil samples 3.6 3.9 million years ago. Here we describe new specimens from Woranso‐Mille site in Ethiopia that are directly relevant to issue. They derive sediments chronometrically dated 3.57–3.8 largely isolated teeth, partial mandibles, maxillae, some postcranial fragments. they shed light on...
Research Article| April 01, 2015 Stratigraphy and geochronology of the Tambien Group, Ethiopia: Evidence for globally synchronous carbon isotope change in Neoproterozoic Nicholas L. Swanson-Hysell; Swanson-Hysell 1Earth Planetary Science Department, University California, Berkeley, California 94720, USA Search other works by this author on: GSW Google Scholar Adam C. Maloof; Maloof 2Department Geosciences, Princeton University, Princeton, New Jersey 08544, Daniel J. Condon; Condon 3Natural...
Research Article| April 26, 2018 The arc of the Snowball: U-Pb dates constrain Islay anomaly and initiation Sturtian glaciation Scott MacLennan; MacLennan 1Department Geosciences, Princeton University, Princeton, New Jersey 08544, USA Search for other works by this author on: GSW Google Scholar Yuem Park; Park 2Earth Planetary Sciences Department, University California, Berkeley, California 94720, Nicholas Swanson-Hysell; Swanson-Hysell Adam Maloof; Maloof Blair Schoene; Schoene Mulubrhan...
Abstract The Tonian-Cryogenian Tambien Group of northern Ethiopia is a mixed carbonate-siliciclastic sequence that culminates in glacial deposits associated with the first Cryogenian glaciations—the Sturtian “Snowball Earth.” deposition occurred atop arc volcanics and volcaniclastics Tsaliet Group. New U-Pb isotope dilution–thermal ionization mass spectrometry (ID-TIMS) dates demonstrate transition between Groups at ca. 820 Ma western exposures 795 eastern exposures, which consistent west to...
Abstract Several hypotheses posit a link between the origin of Homo and climatic environmental shifts 3 2.5 Ma. Here we report on new results that shed light interplay tectonics, basin migration faunal change one hand fate Australopithecus afarensis evolution other. Fieldwork at Mille-Logya site in Afar, Ethiopia, dated to 2.914 2.443 Ma, provides geological evidence for northeast Hadar Basin, extending record this lacustrine Mille-Logya. We have identified three fossiliferous units,...
Abstract The Mai Kenetal-Werii area in northern Ethiopia consists mainly of metavolcanics, metavolcanoclastics, and metasedimentary rocks. This study investigates the provenance depositional setting low-grade rocks using whole-rock geochemistry. major trace element compositions were analyzed by X-ray fluorescence spectrometry (XRF) inductively coupled plasma mass (ICP-MS). chondrite-normalized rare earth (REE) pattern shows an increase light REEs (La N /Sm , 0.93–4.03; average 2.24),...