Late Quaternary palaeoenvironment of northern Guatemala: evidence from deep drill cores and seismic stratigraphy of Lake Petén Itzá
نویسندگان
چکیده
منابع مشابه
Extant freshwater ostracodes (Crustacea: Ostracoda) from Lago Petén Itzá, Guatemala.
Ostracode taxonomy has been of great interest because of their possible use as indicator species in climate and ecosystem changes. In Central and South America, few studies have been carried out and this study includes a contribution to the group. Eleven ostracode species were collected in Lago Petén Itzá (approximately 100km2), the second largest lowland lake in Guatemala, and from its inflow ...
متن کاملThe Lake Petén Itzá Scientifi c Drilling Project
Polar ice cores provide us with high-resolution records of past climate change at high latitudes on both glacial-to-interglacial and millennial timescales. Paleoclimatologists and climate modelers have focused increasingly on the tropics, however, as a potentially important driver of global climate change because of the region’s role in controlling the Earth’s energy budget and in regulating th...
متن کاملQuaternary stratigraphy of Noire River cores, Beauceville area, Quebeci
Potentially gold-bearing sediments in buried valleys in the Beauceville area have been sampled and studied using stratigraphic drilling techniques. These investigations show that river orientation transverse to dominant ice $ow directions, the relationships of preglacial and glacial sediments, oxidation at depth, brown colour in till, and distinctive geochemical data for Ni all provide importan...
متن کاملLate Quaternary lake-level changes constrained by radiocarbon and stable isotope studies on sediment cores from Lake Titicaca, South America
We present and compare AMS-C geochronologies for sediment cores recovered from Lake Titicaca, South America. Radiocarbon dates from three core sites constrain the timing of late Quaternary paleoenvironmental changes in the Central Andes and highlight the site-specific factors that limit the radiocarbon geochronometer. With the exception of mid-Holocene sediments, all cores are generally devoid ...
متن کاملLate Quaternary Sedimentation and Stratigraphy in the Strait of Sicily
OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SI PRESS NUMBER 6166. SERIES COVER DESIGN: Aerial view of Ulawun Volcano, New Britain. Library of Congress Cataloging in Publication Data Maldonado, Andres. Late Quaternary sedimentation and stratigraphy in the Strait of Sicily. (Smithsonian contri...
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ژورنال
عنوان ژورنال: Sedimentology
سال: 2010
ISSN: 0037-0746,1365-3091
DOI: 10.1111/j.1365-3091.2009.01144.x