... andesite, Acantilado tuff, and Cryptic tuff extend westward to Ojos Azules. Below the Acantilado, basalts are dominant in lower Santa Clara Canyon, but rhyolite tuffs and breccias become prominent westward. Small rhyolite vent complexes are exposed near Rancho Manta Negra and Las Varas. The large volumes...

...René C. Maury; Thierry Calmus; Carlos Pallares; Mathieu Benoit; Michel Grégoire; Alfredo Aguillón-Robles; Hervé Bellon; Marcel Bohn According to Castillo's model, Santa Clara Nb-enriched basalts belong to a group of Pacific asthenosphere-derived high-Nb basaltic melts. This group also includes...

... ( Figure 8 ). North of the Santa Clara River, the Mohnian is more than 3000 m thick in the Gulf Hathaway well and adjacent outcrop. Thickness decreases eastward to 1350 m in the Oak Canyon oil field (located on Figure 7 ), part of a broad structural shelf extending east almost to Honor Rancho oil field...

... and the mountains north of the Santa Clara River valley. We mapped landslides triggered by the earthquake in the field and from 1:60,000-nominal-scale aerial photography provided by the U.S. Air Force and taken the morning of the earthquake; these mapped landslides were subsequently digitized and plotted in a GIS...

.... Rose and Rikert, in the Santa Clara Valley, near Alamo, Lower California, last Friday, noticed two peaks four miles to the north alternately spouting smoke and flames at short intervals. The eruption was accompanied by rumbling sounds and an occasional quiver of the ground. Though frightened...

... Santa Clara contained no towns or settlements, only a few large ranchos, and the same was true of the east side of the Bay. Mission San Jose, east of the southern part of the Bay, had the mission staff and a considerable number of Indians. South of the Bay was the Pueblo of San Jose, followed southward...

... extended from San Francisco to San Juan Bautista (∼ 140 km), indicating a significantly larger earthquake ( M ∼ 7½) than previously thought. Damaging effects of the 1836 earthquake were reported only from Santa Clara to Carmel, and no contemporary effects were reported to the north of Santa Clara or near...

...Alfredo Aguillón-Robles; Thierry Calmus; Mathieu Benoit; Hervé Bellon; René C. Maury; Joseph Cotten; Jacques Bourgois; François Michaud Abstract A typical slab melt association was emplaced from 11 to 8 Ma in the Santa Clara volcanic field, Vizcaino Peninsula, Baja California Sur. It includes...

... for that part of the sequence of Miocene strata in the Santa Clara Valley region, which lies above strata which they believed to be of Vaqueros (lower Miocene) age. The exposures of the post-Vaqueros Miocene in the mountainous region north of Santa Clara Valley, between Sespe and Piru creeks, were evidently...

... than a kilometer from the fault. 3. See (14), note 2. 4. About 40 kilometers; this is roughly the distance along the fault from Gorman to Elizabeth Lake. This is the distance the road followed the fault line. 5. Map 36 in Beck and Haase (1974) shows the latter rancho to be along the Santa Clara River...

... in Douvillé’s figure), indicating a LV with a wide umbo coiled anteriorly, projecting dorsally, and covering parts of the right valve. The attribution by Rutten ( 1936 , p. 141–142) of some specimens from the Maastrichtian of northern Santa Clara province, in Cuba...

... assigned an inten- sity of V.] 1900 September 28. 4:17 a.m.V. Gilroy. [Crockery shaken from shelves.] 1900 September 28. Tequisquita Rancho [Santa Clara Co 1900 October 1. 6:15 a.m. Eureka. Light earthquake; vibrations from east to west. Barom- eter about 29.87 inches, temperature about 55°. 1900 October...

... , Evolution of waning, subduction-related magmatism, northern Sierra Madre Occidental, Mexico : Geological Society of America Bulletin , v. 102 p. 1555 - 1564 . Wilson , I.F. , and Rocha , V.S. , 1949 , Coal deposits of the Santa Clara district near Tonichi, Sonora, Mexico : U.S...

... it with the Quirós outcrops of Miranda and the Upper Agua Clara of central Falcón. He divides the La Rosa of the Bolívar Coastal field into a lower or Cadulus zone, corresponding to the Santa Barbara sand, and an upper or Microdrillia zone, subdivided into a lower or Bolivina subzone, corresponding...

.../0016-7037(81)90085-5 . Wilson F.I. Rocha S.V. , 1949 , Coal deposits of the Santa Clara district near Tonichı´ , Sonora, Mexico : U.S. Geological Survey Bulletin 962A , 80 p . Wodzicki W.A. , 1994 , The evolution of Laramide igneous rocks and porphyry copper mineralization...

..., Paris . Rutten , M. G. , 1936 , “ Geology of the Northern Part of the Province of Santa Clara, Cuba ,” Geogr. en Geol. Med. Utrecht , No. 11 , pp. 1 – 60 . Salas , G. P. , and Ramos , E. L. , 1951 , “ Geologiay Tectónica de la Región de Macuspana, Tabasco, y parte norte de...

...Kevin M. Schmidt; Stephen D. Ellen; David M. Peterson Abstract Damage to pavement and near-surface utility pipes caused by the 17 October 1989 Loma Prieta earthquake provides evidence for ground deformation in a 663 km 2 area near the southwest margin of the Santa Clara Valley, California (USA...

... Francisco Bay area on the Hayward fault in 1868 and the Santa Cruz Mountains near Loma Prieta in 1989 and on the Imperial fault near the border with Mexico in 1940. The 1838 earthquake's damage effects throughout the Bay area, from San Francisco to Santa Clara Valley and Monterey, were unequalled by any...

... side of the Santa Clara Valley, the hanging-wall block of the Oak Ridge fault contains strata as old as Oligocene at the surface. Farther east, the Oak Ridge fault divides into three strands; only the northern strand at the edge of the Santa Clara Valley was considered to be active by Yeats (1988a...

..., in Pinar del Rio, Santa Clara, and Ciego de Ávila provinces (Boissevain and Mac Gillavry, 1932 ; Mac Gillavry, 1937 ). RVs are conical-cylindrical. Adult specimens reach 150 mm in height with diameters between 60 and 107 mm. Young specimens are conical, to 30 mm in height and diameters between 50...