Late Holocene paleoseismology of Shuyak Island, Alaska
نویسندگان
چکیده
منابع مشابه
Late Pleistocene and Holocene glaciation of the Fish Lake valley, northeastern Alaska Range, Alaska
We reconstructed a chronology of glaciation spanning from the Late Pleistocene through the late Holocene for Fish Lake valley in the north-eastern Alaska Range using Be surface exposure dating and lichenometry. After it attained its maximum late Wisconsin extent, the Fish Lake valley glacier began to retreat ca. 16.5 ka, and then experienced a readvance or standstill at 11.6 0.3 ka. Evidence of...
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Relict woolly mammoth (Mammuthus primigenius) populations survived on several small Beringian islands for thousands of years after mainland populations went extinct. Here we present multiproxy paleoenvironmental records to investigate the timing, causes, and consequences of mammoth disappearance from St. Paul Island, Alaska. Five independent indicators of extinction show that mammoths survived ...
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S U M M A R Y Our study of lake sediments from Grandfather Lake in SW Alaska (N59.8181◦, W158.5597◦) yields the first geomagnetic inclination record for Alaska that spans the entire Holocene. The record is based on three overlapping sets of piston cores and is well dated by seven AMS radiocarbon dates. Its magnetic component consists of PSD (5–15μm) magnetite that occurs in concentrations rangi...
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Four muddy sand sheets occur within a tidal marsh peat at Swantown on the west coast of Whidbey Island, Washington. The two largest sand sheets pinch out about 100 m inland and became thinner and finer-grained landward. All four sand sheets contain marine microfossils and have internal stratification. They record repeated inundation of the marsh over a short time period by distinct pulses of se...
متن کاملLate Pleistocene to early Holocene lake level and paleoclimate insights from Stansbury Island, Bonneville basin, Utah
a r t i c l e i n f o Keywords: Great Basin Lake Bonneville Great Salt Lake Stansbury Island Stansbury shoreline Stansbury oscillation Stansbury Gulch Paleolake chronology Paleoclimate Multiple proxy This paper reports on recent multiproxy research conducted to determine the chronology of lake-level fluctuations recorded in sediments from a natural exposure at a classic Bonneville basin site. G...
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ژورنال
عنوان ژورنال: Quaternary Science Reviews
سال: 2018
ISSN: 0277-3791
DOI: 10.1016/j.quascirev.2018.10.028