Results 21 to 30 of about 4,315 (229)
BMC Evolutionary Biology, 2010 Background Elucidation of the mechanisms driving speciation requires detailed knowledge about the phylogenetic relationships and phylogeography of the incipient species within their entire ranges as well as their colonization history.
Meyer Axel, Barluenga Marta
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Frontiers in Earth Science, 2022 Decades of geochemical monitoring at active crater lakes worldwide have confirmed that variations in major elements and physico-chemical parameters are useful to detect changes in volcanic activity.
Sabrina Pappaterra +12 more
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Rapid sympatric ecological differentiation of crater lake cichlid fishes within historic times
BMC Biology, 2010 Background After a volcano erupts, a lake may form in the cooled crater and become an isolated aquatic ecosystem. This makes fishes in crater lakes informative for understanding sympatric evolution and ecological diversification in barren environments ...
Harrod Chris +4 more
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MAJOR AND TRACE ELEMENT GEOCHEMISTRY OF EL CHICHON VOLCANO-HYDROTHERMAL SYSTEM (CHIAPAS, MEXICO) IN 2006-20078: IMPLICATIONS FOR FUTURE GEOCHEMICAL MONITORING [PDF]
Geofísica Internacional, 2009 Isotopic, major and trace element composition studies for the crater lake, the Soap Pool and thermal springs at El Chichón volcano in November 2006-October 2007 confirm the complex relationship between annual rain-fall distribution and crater lake volume
M. Cassidy +9 more
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The Sedimentary records of the Hapcheon impact crater basin in Korea over the past 1.3 Ma
Frontiers in Earth Science, 2023 The Hapcheon impact crater is the only meteorite impact crater identified on the Korean peninsula. However, the morphology of the impact crater and the nature of the meteorite collision are unknown. In this study, we analyzed the sedimentary facies using
Jin-Young Lee +6 more
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Dynamics and mass balance of El Chichón crater lake, Mexico [PDF]
Geofísica Internacional, 2004 The mass balance of El Chichón crater lake is controlled by precipitations, evaporation and seepage through the lake bottom. The main non-meteoric source of water and Cl for the lake is a boiling spring (Soap Pool) discharging saline and neutral water ...
Nicholas R. Varley +2 more
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Depositional dynamics in the El'gygytgyn Crater margin: implications for the 3.6 Ma old sediment archive [PDF]
Climate of the Past, 2012 The combination of permafrost history and dynamics, lake level changes and the tectonical framework is considered to play a crucial role for sediment delivery to El'gygytgyn Crater Lake, NE Russian Arctic.
G. Schwamborn +5 more
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The biostratigraphy of sediments deposited in the Lake Kaali meteorite impact structure, Saaremaa island, Estonia [PDF]
Bulletin of the Geological Society of Finland, 1991 The results of lithological, biostratigraphical and chronostratigraphical studies on the Lake Kaali meteorite impact structure, Estonia (lat 58°22' N, long 22°40' E) are discussed. Two pollen diagrams and 18 radiocarbon dates from different materials are
L. Saarse +3 more
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Water sampling using a drone at Yugama crater lake, Kusatsu-Shirane volcano, Japan
Earth, Planets and Space, 2018 Remote sampling of water from Yugama crater lake at Kusatsu-Shirane volcano, Japan, was performed using a drone. Despite the high altitude of over 2000 m above sea level, our simple method was successful in retrieving a 250 mL sample of lake water.
Akihiko Terada +6 more
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Geosciences, 2020 Methane is a powerful greenhouse gas, and the abrupt degassing events that recently have formed large craters on the Russian Arctic Yamal and Gydan Peninsulas have caused major concern. Here we present field data on cover sediments and evolution of a gas-
Evgeny Chuvilin +10 more
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