Results 41 to 50 of about 9,073 (173)
Frontiers in Earth Science, 2018 Villarrica Volcano in the Southern Andes of Chile has sustained persistent open conduit activity, associated with a dynamic lava lake since at least 1984-85.
J. E. Romero +12 more
semanticscholar +1 more source
Sedimentary ancient DNA from caves: Challenges and opportunities
Journal of Quaternary Science, EarlyView.Abstract Caves are unique depositional environments that hold great potential for long‐term preservation of DNA due to their typically cool and stable internal climates, buffered from external climate extremes. Bones from caves have long been recognised as an excellent source of ancient DNA, yet the potential for DNA preservation in cave sediments ...
Siobhan Evans +2 more
wiley +1 more source
, 2018 Here we present the results of a detailed cryptotephra investigation through the Lateglacial to early Holocene transition, from a new sediment core record obtained from Lake Hämelsee, Germany.
Gwydion Jones +11 more
semanticscholar +1 more source
Prerequisites for a computational approach to Minoan chronology
Archaeometry, EarlyView.Abstract The paper examines the development, adoption, and limitations of the relative chronology system for Minoan pottery, initially established by Sir Arthur Evans and Duncan Mackenzie during the excavation of Knossos (1900–1906). Despite its weaknesses, this system remained largely unchanged due to its convenience rather than its accuracy.
Diamantis Panagiotopoulos +1 more
wiley +1 more source
Frontiers in Earth Science, 2018 Mt. Oraefajokull is one of the most dangerous volcanoes in Iceland with potential for a VEI6 eruption and the generation of many severe associated hazards.
S. Barsotti +4 more
semanticscholar +1 more source
Volcanically induced glacier collapses in southern Jan Mayen (Sør‐Jan), Norway
Boreas, EarlyView.A formerly unknown glacier totally covered with tephra was found in an area of Jan Mayen where no Holocene glaciation was known. This glacier and three others in the same area melted abruptly creating jökulhlaups due to volcanic activity impacting the glacier catchments at different times in the Holocene.
Eiliv Larsen +4 more
wiley +1 more source
Boreas, EarlyView.Glacier evolution and environmental changes in the northern Jan‐Mayen from the early deglaciation and well into the Holocene are discussed. Results are based on a large chronological dataset (TCN and radiocarbon dates), integrated with field data on glacial landforms and sediments, including the use of GPR.
Astrid Lyså +5 more
wiley +1 more source
Evidence for the relative depths and energies of phreatomagmatic explosions recorded in tephra rings
Bulletin of Volcanology, 2017 Experimental work and field observations have inspired the revision of conceptual models of how maar-diatreme eruptions progress and the effects of variable energy, depth, and lateral position of explosions during an eruption sequence.
A. Graettinger, G. Valentine
semanticscholar +1 more source
Sedimentology, EarlyView.ABSTRACT Establishing depositional environments in ancient mudstone successions from epeiric seas is difficult due to the lack of obvious lithological changes, leaving long, largely undifferentiated mudstone intervals that complicate their correlation to near‐shore environments.
Jeremy J. Gabriel +5 more
wiley +1 more source
recent progress in tephra study
Bulletin of the Volcanological Society of Japan, 1986 Significant progresses in recent studies on tephra are reviewed. In relation to volcanological aspects of tephra, recent works on mechanism of vesiculations and disruption of magma, formation of eruption column, transportation of tephra, recognition of types and magnitude on eruptions, and roles of interaction between external water and magma are ...
Endo, Kunihiko +3 more
openaire +2 more sources