Results 41 to 50 of about 11,274 (202)

Looking for Microbial Biosignatures in All the Right Places: Clues for Identifying Extraterrestrial Life in Lava Tubes

Applied Sciences
Lava caves are home to a stunning display of secondary mineral speleothems, such as moonmilk and coralloids, as well as highly visible microbial mats. These features contain diverse and under-characterized groups of bacteria.
Joseph J. Medley, Jennifer J. M. Hathaway, Michael N. Spilde, Diana E. Northup   +3 more
doaj   +1 more source

Timing and causes of North African wet phases during the last glacial period and implications for modern human migration [PDF]

, 2016
We present the first speleothem-derived central North Africa rainfall record for the last glacial period. The record reveals three main wet periods at 65-61 ka, 52.5-50.5 ka and 37.5-33 ka that lead obliquity maxima and precession minima.
Fello, Nuri M., Hoffmann, Dirk L., Luetscher, Marc, Moseley, Gina E., Osborne, Anne H., Rogerson, Mike, Spoetl, Christoph, Spötl, Christoph, Vance, Derek   +8 more
core   +2 more sources

Reconstructing post‐crisis recovery in the hinterlands of Constantinople: A high‐resolution first‐millennium CE pollen record from Lake Yeniçağa (NW Türkiye)

Journal of Quaternary Science, EarlyView.
ABSTRACT Facing a novel plague pandemic, military invasions, and political–economic transformations, societies of the eastern Roman (Byzantine) empire had to adapt to a variety of pressures and new ways of exploiting their natural environments during the mid‐1st millennium CE.
Cristiano Vignola, Mustafa Doğan, Warren Eastwood, John Haldon, Alessia Masi, Neil Roberts, Çetin Şenkul, Adam Izdebski   +7 more
wiley   +1 more source

Mapping of Potential Show Caves in the Racha Limestone Massif (Country of Georgia) [PDF]

, 2018
: The Racha limestone massif is located in the eastern part of the karst zone of western Georgia. The massif is a typical example of Georgian mountain karst regions, where diverse surface and subsurface karst landforms are found.
Asanidze, Lasha, Lezhava, Zaza, Chikhradze, Nino, Gaprindashvili, George, Avkopashvili, Guranda   +4 more
core   +1 more source

Deglaciation of the Burren glacio‐karst, western Ireland, during Termination 1: Implications for North Atlantic climate and karstification

Journal of Quaternary Science, EarlyView.
Abstract The Burren uplands in western Ireland form one of the most extensive and best‐preserved examples of glacio‐karst in Europe. Subsumed by the Irish ice sheet during the Late Pleistocene, granite erratic boulders and in situ silica veins in the limestone bedrock provide a rare opportunity to reconstruct the timing and rate of deglaciation ...
Gordon Bromley, Colin Bunce, Brenda Hall, Aaron Putnam, Frank McDermott   +4 more
wiley   +1 more source

The ribbed drapery of the Puerto Princesa Underground River (Palawan, Philippines): morphology and genesis [PDF]

, 2016
During the 2011 speleological expedition to the Puerto Princesa Underground River (Palawan, Philippines) a drapery characterized by several close-to-horizontal ribs has been noticed.
Forti, Paolo, Badino, Giovanni, Calaforra, Jose Maria, De Waele, Jo   +3 more
core   +1 more source

Persistent Decadal-Scale Rainfall Variability in the Tropical South Pacific Convergence Zone Through the Past Six Centuries [PDF]

, 2013
Modern Pacific decadal variability (PDV) has global impacts; hence records of PDV from the pre-instrumental period are needed to better inform models that are used to project future climate variability.
Banner, J. L., Lin, K., Maupin, C. R., Partin, J. W., Quinn, T. M., Shen, C. C., Sinclair, D. J., Taylor, F. W., Thirumalai, K.   +8 more
core   +2 more sources

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

Chemical deposits in evaporite caves: an overview

International Journal of Speleology, 2017
Chemical deposits inside evaporite (gypsum, anhydrite and halite) caves are far less common than those developed within limestone or volcanic cavities.
Paolo Forti
doaj   +1 more source

The Early Upper Palaeolithic in British caves: problems and potential Le Paléolithique supérieur ancien dans les grottes de Grande‐Bretagne : problèmes et potentiels

Journal of the Royal Anthropological Institute, EarlyView.
Recent years have seen landmark progress in our understanding of early Homo sapiens occupation of Europe, owing to new excavations and the application of new analytical methods. Research on British sites, however, continues to lag. This is because of limitations inherent in existing cave collections, and limited options for new fieldwork at known sites.
Robert Dinnis
wiley   +1 more source