Results 111 to 120 of about 36,965 (285)
, 2019 Mercury's volcanic nature has been revealed by NASA's MESSENGER mission. We now know that all, or most, of the surface has, at some point, been flooded by lavas, sometimes in extremely voluminous eruptions. The ages of Mercury's lava surfaces reveal that
Rothery, David A., Thomas, Rebecca J.
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Archaeometry, EarlyView.ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant +6 more
wiley +1 more source
Martian volcanism: A review [PDF]
, 1987 Martian volcanism is reviewed. It is emphasized that lava plains constitute the major type of effusive flow, and can be differentiated by morphologic characteristics.
Carr, Michael H.
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Timing the Sacred: A Multi‐Step Chronological Framework for the Llullaillaco Inca Burial
Archaeometry, EarlyView.ABSTRACT Absolute radiocarbon dating offers high precision, but its application to historical contexts, such as the Inca civilization, requires a rigorous methodological approach. This research examines methods to enhance chronological accuracy through a case study of artifacts from the Llullaillaco Capacocha sacrifice.
Dominika Sieczkowska‐Jacyna +9 more
wiley +1 more source
Anais da Academia Brasileira de Ciências, 2006 The Neoproterozoic shoshonitic and mildly alkaline bimodal volcanism of Southernmost Brazil is represented by rock assemblages associated to sedimentary successions, deposited in strike-slip basins formed at the post-collisional stages of the Brasilian ...
Sommer Carlos A. +4 more
doaj
Dispersal, source and glass chemistry of a third tephra unit within Iceland's Settlement Layer
Boreas, EarlyView.Tephra layers may be studied to understand the dynamics and sequence of past explosive volcanism. In Iceland, the distinctive Settlement Layer (AD ~877) underlies almost all archaeological evidence for the Norse Settlement and is preserved in soils across Iceland and as cryptotephra overseas.
Conner A. G. Morison +3 more
wiley +1 more source
Boreas, EarlyView.The glacierized Valle Frías in Northern Patagonia is one of the best‐studied valleys in South America and includes varved sediments from Lago Frías. We complement this lacustrine record with a high‐resolution documentation of varve counts and their composition.
Bernd Zolitschka +6 more
wiley +1 more source
A Tilted Broad Plume Underneath the Greenland Cratonic Keels
Geophysical Research LettersTo advance our comprehension of the complex geological history and mantle dynamics in the North Atlantic region, we employ all available broadband seismic data recorded in Greenland to reveal an abnormal mantle transition zone (MTZ) structure.
Dan Wang +3 more
doaj +1 more source
Evidence for Miocene subduction beneath the Alboran Sea (Western Mediterranean) from 40Ar/39Ar age dating and the geochemistry of volcanic rocks from holes 977A and 978A [PDF]
, 1999 Volcanic pebbles in gravels from Sites 977 and 978 in the Alboran Sea (western Mediterranean) were dated (using the 40Ar/ 39Ar single-crystal laser technique) and analyzed for their major- and trace-element compositions (determined by X-ray ...
Hoernle, Kaj +4 more
core +1 more source
An overview of explosive volcanism on Venus
, 2023 An Overview of Explosive Volcanism on Venus - Abstract In this thesis, I aim to provide an overview of explosive volcanism on Venus. The existence of explosive volcanism on Venus is uncertain.
Baranová, Anna
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