pre-Cambrian rocks

См. также в других словарях:

• Pre|cam|bri|an — Pre Cam|bri|an or Pre|cam|bri|an «pree KAM bree uhn», noun, adjective. –n. 1. the earliest geological era, including all the time before the Cambrian; the Azoic, Archeozoic, and Proterozoic eras together: »The Pre Cambrian includes all the… …   Useful english dictionary

• Pre-Cam|bri|an — or Pre|cam|bri|an «pree KAM bree uhn», noun, adjective. –n. 1. the earliest geological era, including all the time before the Cambrian; the Azoic, Archeozoic, and Proterozoic eras together: »The Pre Cambrian includes all the history of the earth… …   Useful english dictionary

• Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …   Universalium

• Cambrian — For other uses, see Cambrian (disambiguation). Cambrian Period 542–488.3 million years ago …   Wikipedia

• Cambrian explosion — The Cambrian explosion or Cambrian radiation was the seemingly rapid appearance of most major groups of complex animals around Ma|530, as evidenced by the fossil record. [http://www.ucmp.berkeley.edu/cambrian/camb.html The Cambrian Period] ]… …   Wikipedia

• Geology of Wales — Wales is a peninsula in the south west of the island of Great Britain. The entire area of Wales is about 20,779 km² (8,023 square miles). It is about 274 km (170 miles) north south and 97 km (60 miles) east west. Wales is bordered by England to… …   Wikipedia

• Henry Hicks (geologist) — Henry Hicks, MRCS, FRS (1837 – 1899) was a Welsh physician, surgeon, Member of the Royal College of Surgeons (MRCS), geologist, President of the Geological Society and Fellow of the Royal Society (FRS). He studied the Precambrian rocks of… …   Wikipedia

• Llandovery Group — In geology, the Llandovery Group refers to the lowest division of the Silurian period (Upper Silurian) in Britain. It is named after the town of Llandovery in Wales, although Charles Lapworth had proposed the name Valentian (from the Roman… …   Wikipedia

• Sederholm, Jakob Johannes — ▪ Finnish geologist born July 20, 1863, Helsinki, Fin., Russian Empire died June 26, 1934, Helsinki  geologist who pioneered in the study of the Precambrian rocks (those from 3.96 billion to 570 million years old) of Finland. He was appointed… …   Universalium

• Quartz-porphyry — Quartz porphyry, in petrology, is the name given to a group of hemi crystalline acid rocks containing porphyritic crystals of quartz in a fine grained matrix, usually of micro crystalline or felsitic structure. In specimens, the quartz appears as …   Wikipedia

• Sharavathi River — Geobox River name = Sharavathi native name = ಶರಾವತಿ other name = other name1 = image size = 300 image caption = Jog Falls formed by the Sharavathi river. country = India state = Karnataka city = Hosanagara city1 = Honnavar length = 128 watershed …   Wikipedia