Results 201 to 210 of about 107,558 (336)

Fecal Steroids as Tracers of Human Population and Waste Management Practices at the Ancient Maya City of Ucanal, Guatemala

Archaeometry, EarlyView.
ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay, Peter M. J. Douglas, Christina T. Halperin, Yves Gélinas   +3 more
wiley   +1 more source

Identification and Quantification of Volatile Organic Compounds and Bioaerosols in the Conservation Processes of Guanche Mummies

Archaeometry, EarlyView.
ABSTRACT The Guanche mummies, ancient inhabitants of the Canary Islands, represent a significant part of the historical heritage preserved at the Museum of Nature and Archaeology (MUNA) in Tenerife, Spain. These mummies, subjected to artificial conservation practices, are of great interest to conservators seeking to understand their mummification ...
Benigno Sánchez, Maria Cristina Canela, Maria Garcia Morales, Juan Gilaranz, Murilo de Oliveira Souza, Ruth Mª. Rufino García   +5 more
wiley   +1 more source

Geochemical variability and microbial metabolic functions in oligotrophic sediments exposed to minor seepage. [PDF]

Front Microbiol
Schnabel E, Vuillemin A, Esser S, Griesdorn L, Soares AR, Mørkved PT, Jørgensen SL, Probst AJ, Kallmeyer J, PROSPECTOMICS Consortium.   +9 more
europepmc   +1 more source

Sedimentology, organic geochemistry and reservoir characterization of the Upper Miocene sediments onshore Nile Delta, Egypt

, 2018
Mahmoud Leila
openalex   +2 more sources

Provenance Analysis Based on Cluster In‐Betweenness and Support Vector Machines: Identifying Migrant Candidates Using Multi‐Isotope Fingerprints

Archaeometry, EarlyView.
ABSTRACT Provenance reconstruction using strontium and lead stable isotopes can produce complex multidimensional fingerprints, challenging traditional methods. Identifying nonlocals, who migrated between sites, is a major task. Migrants are identifiable by divergent multi‐isotope fingerprints due to isotopic mixing between origin and destination sites.
Andrea Göhring, Daniyal Kazempour, Jan Robert Bensien, Sweety Mohanty, Claudius Zelenka, Matthias Renz, Peer Kröger, Gisela Grupe, Amei Lang   +8 more
wiley   +1 more source

Enhanced erosion by continental arc volcanism as a driver of the Cambrian Explosion. [PDF]

Nat Commun
Wu Y, Tian H, Fan H, Pogge von Strandmann PAE, Zhao W, Li J, Sun H, Gu H, Lu C, Liu X, Li T, Ji S, Peng P.   +12 more
europepmc   +1 more source

Organic geochemistry and basin modeling of the Eocene Mangahewa source rock system in the Pohokura oilfield, Taranaki Basin (New Zealand) and their indication of oil and gas potential

S. M. Talha Qadri, Mohammed Hail Hakimi, Mahdi Ali Lathbl, Aref Lashin, Mohammed Almobarky, Afikah Rahim, Rahim Afikah   +6 more
openalex   +1 more source

Chemical fossils: trends in organic geochemistry [PDF]

, 1973
Max Blumer
openalex   +1 more source

Assessing the Vulnerability of an Inuit Archaeological Site in a Changing Periglacial Environment: A Novel Multimethod Geophysical Approach in Arctic Geoarchaeology

Archaeometry, EarlyView.
ABSTRACT With northern regions warming at twice the global rate, assessing the state of archaeological sites in these areas is critically important. In this study, we used a multimethod geophysical approach (ERT, GPR, and EMI) to characterize the current geocryological conditions of an Inuit archaeological site on South Aulatsivik Island (Labrador ...
Rachel Labrie, Dominique Todisco, Najat Bhiry, Cécile Finco, Héloïg Barbel Le Page, Armelle Couillet   +5 more
wiley   +1 more source

Seismic shifts in the geochemical and microbial composition of a Yellowstone aquifer. [PDF]

PNAS Nexus
Boyd ES, Colman DR, Menchaca A, Spietz RL, Shoemaker A, Finn C, Mencin D, Andrade-Barahona E, Cox A, Kieft T, Bilek S, Hungerford J, Onstott TC.   +12 more
europepmc   +1 more source