This article surveys research in Northwest Mexico (Sonora and Chihuahua), with an
emphasis on the Early Agricultural period to the Late Prehistoric period. Middle range …

Diet and habitat were estimated, based on stable isotopes, for six species of proboscideans
inhabiting the Americas during the Pleistocene. In North America, Mammuthus columbi …

Northern Mexico is predominantly composed of moderately developed red soils that provide
evidence of weathering, rubification, neoformation of clay, and pedogenic carbonate …

Rock surfaces covered with desert varnish frequently feature petroglyphs and thus comprise
an important resource for the artistic expression of ancient societies. Knowledge about the …

Se analiza la época propuesta de Antropoceno relacionada con el control de geosistemas
por actividades humanas con base en estudios ambientales vs. condiciones antrópicas del …

Stable isotopes of carbon (δ 13 C) in terrestrial geological materials (paleosol humus and
carbonates) as well as fossil bones (collagen and tooth enamel) are established as highly …

Introduction: What were the effects of paleoanthropogenic activities on the physicochemical
properties and degree of the development of soil? To search for this answer, we can not only …

Northwest Mexico and West Mexico include four to five times as many named cultural areas
equivalent to those known in the US Southwest, all with independent yet also connected …

Desert varnish is a dark microlayer that forms on rocky surfaces that is usually associated
with arid and desert environments. It consists mainly of clay minerals (60%), while the rest …

Rock varnish is a thin layer (1-40 microns every 1000 years), dark-reddish in color (30% Mn
and Fe oxides, 70% clay minerals), that coats a rock surfaces in the northern Mexican …