Tephra fall - Open Access .click

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Rare earth element geochemistry of the Late Quaternary tephra and volcano-clastic sediments from the Pachuca sub-basin, north-eastern Basin of Mexico [PDF]

Geofísica Internacional, 2010
Chondrite normalized REE patterns, fractionations of light (La/Sm), heavy (Gd/Yb) and total (La/Yb) REE and Eu anomalies of the Late Quaternary multi-layer tephra fall deposits and overlying volcano-clastic sediments deposited in the Pachuca sub-basin ...
R. Lozano +4 more
doaj

Potential atmospheric impact of the Toba Mega‐Eruption ∼71,000 years ago [PDF]

, 1996
An ∼6‐year long period of volcanic sulfate recorded in the GISP2 ice core about 71,100 ± 5000 years ago may provide detailed information on the atmospheric and climatic impact of the Toba mega‐eruption. Deposition of these aerosols occur at the beginning
Mayewski, Paul A. +5 more
core +3 more sources

Lakes [PDF]

, 1992
Lakes have always held an aesthetic fascination for people; they figure prominently in both art and literature and have even been endowed with spiritual qualities. For example, the nineteenth century American writer Henry D.
Green, John D., Lowe, David J.
core +1 more source

Volcanic ash beds in the Waikato district [PDF]

, 1967
This report lies somewhere between the "pathfinder" variety and the completed account for the reason that the results of detailed mapping and identification are still being prepared for publication. For the younger beds less than 36,000 years we now know
Pullar, W.A.
core +1 more source

High-precision tephrostratigraphy : tracking the time-varying eruption pulse of Mt. Taranaki, North Island, New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Earth Science, Massey University, Palmerston North, New Zealand [PDF]

, 2017
In this research it was proposed that a more robust record of volcanic activity for Mt. Taranaki (New Zealand) could be derived from tephras (pyroclastic fall deposits) within cores from several lakes and peatlands across a 120o arc, NE-SE of the ...
Damaschke, Magret
core

Changes of sub-fossil chironomid assemblages associated with volcanic sediment deposition in an Andean lake (38°S), Chile Cambios en las asociaciones sub-fósiles de quironómidos, producto de la depositación de sedimentos volcánicos en un lago andino (38°S), Chile

Revista Chilena de Historia Natural, 2007
Chironomid assemblages and sedimentological parameters (grain size, organic content, mineralogy) of a short sediment core from Lake Galletué (38°41' S, 71°17' W) were analysed.
ALBERTO ARANEDA +8 more
doaj

Petrologic evidence for pressure-temperature conditions and recent reheating of andesitic magma erupting at Soufriere Hills Volcano, Montserrat, WI [PDF]