A mammoth jaw found as a large clast in the channel of Matanza Arroyo near Socorro, New Mexico, is here termed the Matanza mammoth. Cemented pebbly sandstone attached to the jaw shows that it was reworked from partially cemented ancestral Rio Grande sediments exposed in the channel 50–90 m upstream. This jaw is from one of the geologically oldest and most primitive North American mammoths. The ...

Fossil deposits in the petroleum-rich sediments of the Santa Elena Peninsula in southwestern Ecuador contain some of the largest and best-preserved assemblages of Pleistocene megafaunal remains known from the neotropics, and thus represent an opportunity to greatly expand our knowledge of Pleistocene paleoecology and the extinction of Quaternary megafauna in this region. This paper reports data...

FOREWORD This report provides recommended guidelines for consumption of fish from Lake Pillsbury (Lake County). These guidelines are provided to the public as a result of findings of high levels of mercury in fish tested from Lake Pillsbury. These recommendations are provided to protect against possible adverse health effects that may result from consumption of mercury-contaminated fish. The re...

aeolian process and subsequently soil erosion are key factors in dryland environments. such phenomena are related not only to geoecological factors (lithology, topography, and climatology) but also to land-use and plant cover changes. formation of new sand dunes in damghan explains the development of human activities over the past. the aim of this study is to explain the land use changes and th...

background: groundwater nitrate pollution is an important environmental problem in water resources management. in this regard, specific measures aiming at prevention of water pollution will be helpful to managers and decision-makers. identification of aquifers’ vulnerable areas and determination of groundwater protection zones using most widely used models, such as drastic and cd, are one of th...

Site U1501 of International Ocean Discovery Program (IODP) Expedition 368 locates on a broad regional basement high in the northern margin South China Sea (SCS). This study refines chronostratigraphy upper 160 m sedimentary succession from Hole U1501C using paleomagnetic measurements and cyclostratigraphic analysis Natural Gamma Radiation (NGR) data. Rock magnetic displays that signal sediments...