Results 111 to 120 of about 72,128 (237)
Analysis of Surface Collections from Areas A and B at the Sam Roberts Site (41CP8) on Prairie Creek, Camp County, Texas [PDF]
, 2013 The Sam Roberts site is a large ancestral Caddo mound center and habitation site on the floodplain of Prairie Creek, an eastward-flowing tributary to Big Cypress Creek, as well as on an upland landform south of the creek. Robert L.
Perttula, Timothy K.
core +1 more source
Revue Archéologique du Centre de la France, 2013 The prehistoric site of Bas-de-Luisant in Eure-et-Loir was discovered at the end of the 19th century. For several decades it has been the subject of occasional visits of distinguished prehistorians and amateurs who collected an interesting lithic ...
Hélène Djema
doaj
Homo luzonensis and the role of homoplasy in the morphology of hominin insular species
Cladistics, EarlyView.Abstract Homo luzonensis lived during the upper Pleistocene in the northern Philippines, east of the Wallace line. The few specimens attributed to this species show a mosaic of plesiomorphies for the genus Homo and apomorphies found in upper Pleistocene Homo species.
Pierre Gousset +4 more
wiley +1 more source
Grassland Science, EarlyView.Abstract Cultivation as a summer annual grass in temperate regions of new extremely late‐maturing guineagrass cultivar “Umaku” without heading with fertilizer application entails risks of toxic nitrate nitrogen (nitrate‐N) concentration in the grass.
Makoto Kaneko +3 more
wiley +1 more source
The Wolf Site (41SM195), Smith County, Texas [PDF]
, 2003 The Wolf site (41SM195) is a prehistoric Caddo site located in eastern Smith County, Texas, in the John Wolf land survey, approximately 12 miles east of Tyler, Texas.
Dering, Phil, Walters, Mark
core +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews +5 more
wiley +1 more source
Vertical profiling of shock attenuation at the Rochechouart impact structure, France
Meteoritics &Planetary Science, EarlyView.Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska +4 more
wiley +1 more source
Analysis of the Prehistoric Artifacts from the Pace McDonald Site (41AN51), Anderson County, Texas [PDF]
, 2011 The Pace McDonald site (41AN51) is a poorly known prehistoric Caddo mound center on Mound Prairie Creek in Anderson County, Texas, in the upper Neches River Basin. With the permission of one of the landowners, Mr. Johnny Sanford, the Friends of Northeast
Perttula, Timothy K.
core +1 more source
Static recrystallization of shocked calcite in Ries impact breccias
Meteoritics &Planetary Science, EarlyView.Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann +8 more
wiley +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska +6 more
wiley +1 more source