Results 211 to 220 of about 541,326 (254)

And then there was us Et puis nous sommes apparus

Journal of the Royal Anthropological Institute, EarlyView.
In 1987, the academic conference ‘Origins and Dispersals of Modern Humans: Behavioural and Biological Perspectives’ was held in Cambridge, UK. Subsequently referred to as the ‘Human Revolution’ conference, this meeting brought together the most prominent academics working in the field of human origins, including archaeologists and palaeoanthropologists,
Emma E. Bird, Julia Galway‐Witham, Chris Stringer   +2 more
wiley   +1 more source

Heterogeneous slab mantle hydration controls the chemical architecture of the Kamchatka arc. [PDF]

Sci Adv
Xue Q, Chen S, Fan J, Li J, Zhao D, Hoernle K, Portnyagin M, Sun W.   +7 more
europepmc   +1 more source

Newly Identified Early Cretaceous High-Mg Diorites in the Southern Dayaoshan Area of South China: Petrogenesis and Geodynamic Implications. [PDF]

ACS Omega
Wei Y, Meng L, Zhang Y.
europepmc   +1 more source

Lithic analysis in African archaeology: Advances and key themes

Archaeometry, EarlyView.
Abstract Stone artifacts (lithics) preserve for extended periods; thus they are key evidence for probing the evolution of human technological behaviors. Africa boasts the oldest record of stone artifacts, spanning 3.3 Ma, rare instances of ethnographic stone tool‐making, and stone tool archives from diverse ecological settings, making it an anchor for ...
Deborah I. Olszewski, Amanuel Beyin, Justin Pargeter   +2 more
wiley   +1 more source

Cattle-induced homogenization of microbial communities weakens the influence of geochemical gradients in small water bodies. [PDF]

Sci Rep
Zahir Z, Mensah M, Flaman SP, Cameron ADS, Finlay K, Hall BD.   +5 more
europepmc   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Lytic viruses drive the decrease in polyphosphate-accumulating and phosphate-solubilizing potential of microbial communities with increasing reservoir age. [PDF]

Appl Environ Microbiol
Wu Q, Wu D, Wang J, Wang H, Peng J, Zhao Y, Chen J, Yuan Q.   +7 more
europepmc   +1 more source

Investigating relationships among strontium, barium, and seasonality in wild baboons

Archaeometry, EarlyView.
Abstract Geochemical profiles of Australopithecus africanus and baboon teeth show fluctuating trace elements, possibly reflecting seasonal diets. Here we use laser ablation–inductively coupled plasma–mass spectrometric measurements of calcium‐normalized strontium and barium ratios (Sr/Ca and Ba/Ca) and ion microprobe analyses of oxygen isotopes (δ18O ...
Maya Bharatiya, Christine Austin, Manish Arora, Janaína N. Ávila, Esme K. Beamish, Wendy Dirks, Daniel R. Green, Nicole D. Leonard, W. Scott McGraw, Larissa Swedell, Ian S. Williams, Jian‐xin Zhao, Tanya M. Smith   +12 more
wiley   +1 more source

Anthropogenic Versus Natural Controls on Metals in Surface Sediments from the Zhejiang Island Sea Area: Evidence from Historical Baseline and PMF Analysis. [PDF]

Toxics
Wang R, Gan Y, Hu J, Mi X, Ni J, Liu Z, Cheng W, Chang C.   +7 more
europepmc   +1 more source