Results 51 to 60 of about 771 (201)

Tephrochronological evidence for the late Holocene eruption history of El Chichón Volcano, Mexico [PDF]

Geofísica Internacional, 2009
Pre-Columbian societies in the Maya Lowlands were repeatedly exposed to tephra-fall from past eruptions of El Chichón volcano, Chiapas, Mexico. Late Holocene tephra layers are well preserved in sediments of the Usumacinta-Grijalva river delta, about 150 ...
A. L. Martin Del Pozzo, L. A. Tebbens, C. A. M. Nooren, W.Z. Hoek   +3 more
doaj  

A tephrostratigraphic investigation of the continuously varved Holocene Boreal lake Nautajärvi, Finland, provides precise age estimate for Lairg A/Hekla 5 eruption

Journal of Quaternary Science, Volume 40, Issue 7, Page 1212-1229, October 2025.
ABSTRACT Numerous cryptotephra layers originating from Icelandic volcanoes and further afield have reached Northern Europe during the Holocene. Refining the precise timing and the relative frequency of local and distal eruptions requires well‐resolved continuous sediment archives. Lake Nautajärvi is located in central‐southern Finland (61°48′ N, 24°41′
Alice Carter‐Champion, Katy Flowers, Antti E.K. Ojala, Simon Blockley, Paul Lincoln, Shuang Zhang, Christina Manning, Celia Martin Puertas   +7 more
wiley   +1 more source

Tephra without borders: Far-reaching clues into past explosive eruptions

Frontiers in Earth Science, 2015
This review is intended to highlight recent exciting advances in the study of distal (>100 km from the source) tephra and cryptotephra deposits and their potential application for volcanology.
Vera ePonomareva, Maxim ePortnyagin, Maxim ePortnyagin, Siwan eDavies   +3 more
doaj   +1 more source

Iron‐Bearing Minerals as Potential Indicators of Paleo‐Methane Seepage Evolution

Journal of Geophysical Research: Oceans, Volume 130, Issue 10, October 2025.
Abstract Methane (CH4) release and consumption in marine cold seeps are key processes influencing seabed ecology, global climate reconstruction, and hydrate resource exploration. Anaerobic oxidation of methane (AOM), the primary methane consumption mechanism, typically couples with microbial sulfate or metal reduction.
Pengcong Wang, Jiayi Ma, Deng Liu, Ganglan Zhang, Taiheng Shi, Meng Jin, Jun Cao, Fang Chen, Lixue Zhang, Kai Liu, Xiaoqiang Yang, Yinan Deng   +11 more
wiley   +1 more source

Climate variability over the last 92 ka in SW Balkans from analysis of sediments from Lake Prespa [PDF]

Climate of the Past, 2014
The transboundary Lake Prespa (Albania/former Yugoslav Republic of Macedonia/Greece) has been recognized as a conservation priority wetland. The high biodiversity encountered in the catchment at present points to the refugial character of this ...
K. Panagiotopoulos, A. Böhm, M. J. Leng, B. Wagner, F. Schäbitz   +4 more
doaj   +1 more source

Challenges in dating blanket peat and implications for understanding its initiation in Ireland

Journal of Quaternary Science, Volume 40, Issue 6, Page 996-1009, August 2025.
ABSTRACT Blanket peat is widespread in maritime extra‐tropical environments. Prehistoric land‐use activity was traditionally invoked as the stimulus of blanket peat initiation in the British Isles, but recently, climate has been viewed as the driver of peat formation.
Helen Essell, Gill Plunkett, Maarten Blaauw   +2 more
wiley   +1 more source

Bipolar Seesaw of Atmospheric CO2 Between North Pacific and Southern Ocean at Millennial Timescales

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract The interhemispheric relation of deep‐water ventilation and surface‐ocean productivity may have played a prominent role in past atmospheric CO2 regulation. However, how these processes vary on orbital‐millennial timescales remains poorly understood.
Yi Zhong, Yanguang Liu, Jimin Yu, Chijun Sun, Qin Wen, Sev Kender, Keiji Horikawa, Xu Zhang, Michael E. Weber, Siqi Li, Hu Yang, Stefanie Kaboth‐Bahr, André Bahr, Zhaoyang Song, George E. A. Swann, Wei Cao, Sheng Yang, Yuxing Liu, Jingyu Zhang, Hai Li, Wenyue Xia, Qingsong Liu   +21 more
wiley   +1 more source

The Lost MIS 11c Mammalian Fauna from Via dell’Impero (Rome, Italy)

Quaternary
This research presents an in-depth analysis of large mammal remains first discovered in 1932 in the archaeological area of ancient Rome, central Italy, during the work for the opening of Via dell’Impero (VFI).
Maria Rita Palombo, Biagio Giaccio, Lorenzo Monaco, Roberta Martino, Marina Amanatidou, Luca Pandolfi   +5 more
doaj   +1 more source

Building an 18 000-year-long paleo-earthquake record from detailed deep-sea turbidite characterisation in Poverty Bay, New Zealand [PDF]

Natural Hazards and Earth System Sciences, 2012
Two ~20 m-long sedimentary cores collected in two neighbouring mid-slope basins of the Paritu Turbidite System in Poverty Bay, east of New Zealand, show a high concentration of turbidites (5 to 6 turbidites per meter), interlaid with hemipelagites ...
H. Pouderoux, G. Lamarche, J.-N. Proust
doaj   +1 more source

Late Pleistocene Volcanic Ash Layers in Core MD972142, Offshore From Northwestern Palawan, South China Sea:A Preliminary Report

Terrestrial, Atmospheric and Oceanic Sciences, 1998
More than 18 distinct, well-defined ash-rich layers were recognized from the piston core MD972142 raised offshore form northwestern Palawan during the IMAGES III ¡V IPHIS ¡V Leg II Cruise in the South China Sea.
Kuo-Yen Wei, The-Quei Lee, the Shipboard Scientific Party of IMAGES III/MD106-IPHIS Cruise (Leg II)   +2 more
doaj   +1 more source