Thick ash-flow tuffs provide marker beds through fossiliferous Eocene and Oligocene marine
and non-marine sedimentary rocks near Eugene, Oregon. New mapping, radiometric dating …

In the Fort Irwin region of the northern Mojave desert, late Cenozoic east striking sinistral
faults predominate over northwest striking dextral faults of the same age. Kinematic …

Abstract 1 Introduction 2 Geologic Setting 7 Lithostratigraphy 11 Upper fluvial unit 11 Middle
lacustrine unit 16 Lower alluvial unit 17 Magnetostratigraphy 19 Paleomagnetic methods 19 …

Reconstructions of long-term fault activity are essential for understanding both the
mechanisms controlling fault behavior and accurate earthquake hazard assessments …

ABSTRACT The Manix Formation consists of lacustrine, fluvial, and alluvial sediments that
were deposited within and adjacent to Lake Manix. This middle to late Pleistocene pluvial …

ABSTRACT The Alsea Formation, Yaquina Sandstone, and Nye Mudstone make up a
sequence of almost 3300 m of Oligocene-Miocene marine strata. It is one of the thickest and …

ABSTRACT The Astoria Formation, one of the world's richest sections of Miocene
fossiliferous marine rocks, crops out along seacliffs north and south of Yaquina Head at …

The nitrogen cycle in desert soil ecosystems is particularly sensitive to changes in
precipitation, even of relatively small magnitude and short duration, because it is already …

Magnetic Stratigraphy and Tectonic Rotation of the Upper Oligocene Pysht Formation, Clallam
County, Washington Page 1 MAGNETIC STRATIGRAPHY AND TECTONIC ROTATION OF THE …

The upper Eocene‐lower Oligocene Keasey Formation in northwestern Oregon consists
of∼ 700 m of deep marine forearc basin sediments exposed in stream beds and roadcuts …