Results 181 to 190 of about 1,979 (212)
Some of the next articles are maybe not open access.
A new species of Ceanothus (Rhamnaceae) from Sierra Madre Occidental, Mexico
Phytotaxa, 2019Ceanothus fernandezii is described as a new species in the subgenus Ceanothus from the Sierra Madre Occidental in the Mexican state of Durango. It differs from known species of Ceanothus for having rigid secondary branches with elliptic to ovate leaves with three veins at the base and a pubescent lower surface, white flowers and smooth fruit ...
JOSÉ A. VILLARREAL-QUINTANILLA +2 more
openaire +1 more source
Contributions to Mineralogy and Petrology, 1980
The mid-Tertiary ignimbrites of the Sierra Madre Occidental of western Mexico constitute the largest continuous rhyolitic province in the world. The rhyolites appear to represent part of a continental magmatic arc that was emplaced when an eastward-dipping subduction zone was located beneath western Mexico.
Cameron, Kenneth L. +2 more
openaire +1 more source
The mid-Tertiary ignimbrites of the Sierra Madre Occidental of western Mexico constitute the largest continuous rhyolitic province in the world. The rhyolites appear to represent part of a continental magmatic arc that was emplaced when an eastward-dipping subduction zone was located beneath western Mexico.
Cameron, Kenneth L. +2 more
openaire +1 more source
The Distribution of Conservation-Type Water-Control Systems in the Northern Sierra Madre Occidental
KIVA, 1988The occurrence and distribution of water-control devices in the northern Sierra Madre Occidental can be explained on the basis of the soil's parent material and, to a lesser extent, by the seasonal distribution of precipitation. The areas at the northern and western extremes of the Sierra Madre are associated with andesite surface rock which weathers ...
Robert H. Schmidt, Rex E. Gerald
openaire +1 more source
New Species of Lampropeltis (Serpentes: Colubridae) from the Sierra Madre Occidental, México
Journal of Herpetology, 2005We describe a new species of Lampropeltis from the Pacific versant of the Sierra Madre Occidental in western Mexico based on external morphology, scutellation, and molecular data. This species appears to be closely related to Lampropeltis pyromelana and Lampropeltis mexicana.
Robert W. Bryson Jr +2 more
openaire +1 more source
Smithsonian Herpetological Information Service, 1990
NMNH
McCranie, James R., Wilson, L. D.
openaire +2 more sources
NMNH
McCranie, James R., Wilson, L. D.
openaire +2 more sources
Northern Sierra Madre Occidental Gold-Silver Mines, Mexico
2010Abstract The Mulatos district is a volcanic-hosted, advanced argillic, gold enargite system of late Oligocene age, located in the northern Sierra Madre Occidental volcanic province of Sonora, Mexico. Hypogene mineralization is associated with rhyodacite domes and major faults. Gold is associated with pyrite ± enargite in distinct pods of
openaire +1 more source
1979
Igneous rocks of the Sierra Madre Occidental have been studied along two traverses across the range. One is at lat 24°N between Mazatlán and Durango City, where contiguous mapped areas extend across the Sierra; the other is near lat 28°N, where several separate areas west and north of Chihuahua City have been mapped.
Fred W. McDowell, Stephen E. Clabaugh
openaire +1 more source
Igneous rocks of the Sierra Madre Occidental have been studied along two traverses across the range. One is at lat 24°N between Mazatlán and Durango City, where contiguous mapped areas extend across the Sierra; the other is near lat 28°N, where several separate areas west and north of Chihuahua City have been mapped.
Fred W. McDowell, Stephen E. Clabaugh
openaire +1 more source
Wixaritari or Huichol Ethnobotany of the Southern Sierra Madre Occidental in Mexico
2022Martha Cedano-Maldonado +2 more
openaire +1 more source