EurekaMag
+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Geology and petrography around the Buenavista Hill (Death Hill) area, Costa Rica


Geology and petrography around the Buenavista Hill (Death Hill) area, Costa Rica



Revista Geologica de America Central 30: 31-39



The study area, in the Vueltas quadrangle (1:50 000), corresponds to the top hills of Cerro Buenavista (Cerro de La Muerte). The outcrops of sedimentary rocks (not differentiated in the map) are shallow water vulcarenites, medium and coarse breccias, fossiliferous calcarenites and sandy black shales. The intrusions of the Comagmatic Talamanca Group have altered this sequence with important but located hydrothermal alteration. The age of the sequence is possibly Miocene and it can be correlated with the Pena Negra Formation (terrigenous mudstones) and the shallow sequence of dominant sandstones, with Coris Formation. The intrusive rocks, macroscopically and microscopically are described as augite gabbros. The volcanic rocks correspond with dacites and alkaline basalts (?) belonging to the Aguacate Group, correlationable with Grifo Alto Formation with a Plio-Pleistocene (?) age. This sequence is intruded by andesitic dikes. Dacitic rocks were observed cropping out in the Cerro Jaboncillo, forming extrusive domes of Lower Plio-Pleistocene age. The morphological analysis shows three directions of alignments, the dominant one has a NW direction, followed of the less dominant direction NE, and finally the last one is towards the E-W. This suggests that the extrusions probably took advantage of cortical weaknesses to arrive at the surface.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 019043750

Download citation: RISBibTeXText

Related references

Geology and ore petrography of Permian kuroko-type volcanogenic massive sulfide deposits of the Bully Hill area, East Shasta District, California. Economic Geology and the Bulletin of the Society of Economic Geologists 95(2): 343-360, 2000

The geology of the Fitzpatrick area North Broken Hill Limited, Broken Hill, NSW. Conference Series - Australasian Institute of Mining and Metallurgy 12: 177-182, 1983

Aspectos neotectonicos y geologicos de Puriscal y alrededores, Costa Rica - Neotectonics and geology of the Puriscal area, Costa Rica. Rev. Geol. Am. cent (12): 83-95, 1991

The geology and geological development of the Broken Hill Lode in the New Broken Hill Consolidated Mine, Australia; Part 1, structural geology. Journal of the Geological Society of Australia 21, Part 4(4): 413-430, 1974

Geology and petrography of the Bezwada and Kondapalle hill ranges; part II, Charnockites and associated rocks and chromite. Proceedings of the Indian National Science Academy, Part A: Physical Sciences 26(3): 133-166, 1947

Contributions to the geology of Rhode Island; the petrography and mineralogy of Iron Mine Hill, Cumberland. American Journal of Science: 12-38, 1908

El terremoto de Buenavista de Perez Zeledon (Julio, 3, 1983): Evidencia de una fuente sismogenica intraplaca desconocida en Costa Rica - Le séisme de Buena vista de Perez Zeledon (3 Juillet 1983): Mise en évidence d'une source sismique intraplaque inconnue au Costa Rica. Rev. Geol. Am. cent (8): 111-121, 1988

Gunningite, a new zinc sulphate from the Keno Hill-Galena Hill area, Yukon. The Canadian Mineralogist 7, Part 2: 209-218, 1962

Age of AgPbZn mineralization, Keno Hill Galena Hill area, Yukon Territory. Canadian Journal of Earth Sciences 17(8): 1100-1103, 1980

The geochemistry of arsenic, Keno Hill-Galena Hill area, Yukon, Canada. Pages 757-770 1965, 1965

Rhyolites in the Gillies Hill-Woodtick Hill area, Beaver County, Utah. Geological Society of America Bulletin 93(11): 1131-1141, 1982

Lead-zinc-silver lodes of the Keno Hill-Galena Hill area, Yukon. Pages 51-65 1957, 1957

Nutrición materna durante el embarazo: estudio de mujeres de una zona rural de Costa Rica - Alimentation maternelle durant la grossesse. Etude de femmes dans une zone rurale du Costa Rica - Maternal nutrition during pregnancy. Study of women in a rural area of Costa Rica. Boletin de la Oficina Sanitaria Panamericana 104(4): 345-354, 1988

Faunal correlation of the Siluro-Devonian units, Mineral Hill-Trundle-Peak Hill area. Geological Survey of New South Wales Quarterly Notes 39: 1-14, 1980

Silver-lead-zinc deposits of the Keno Hill-Galena Hill area, central Yukon. Yukon Geology 1: 83-88, 1986