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Variety of high-magnesium basalt that is very rich in the mineral olivine
Picrite basalt or picrobasalt is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine. It is dark with yellow-green olivine
Picrite_basalt
Very large volume eruption of basalt lava
primitive melt may have had the composition of picrite basalt, but picrite basalt is uncommon in flood basalt provinces. One possibility is that a primitive
Flood_basalt
Mica mineral in the biotite subgroup
high-alumina basalts, ultrapotassic igneous rocks, and ultramafic rocks. The basaltic occurrence of phlogopite is in association with picrite basalts and high-alumina
Phlogopite
Series of sub-alkaline magmas
include tholeiitic basalt, ferro-basalt, tholeiitic basaltic andesite, tholeiitic andesite, dacite and rhyolite. The variety of basalt in the series was
Tholeiitic_magma_series
Volcanic crater in Oregon, United States
overall composition is mafic (rich in magnesium and iron), chiefly basalt and picrite basalt (picrobasalt). Other associated volcanic features include a chain
Blue_Lake_Crater
Large igneous province in the North Atlantic, centered on Iceland
made up of MORB (Mid Ocean Ridge Basalt), alkali basalt, tholeiitic basalt, and picrite basalt. Basaltic volcanic rocks up to 2.5 kilometres (1.6 mi) thick
North Atlantic Igneous Province
North_Atlantic_Igneous_Province
Shield volcano in southeast Réunion, Indian Ocean
the volcano are greenish in color, due to olivine sand derived from picrite basalt lavas. The Grand Brûlé is formed from solidified lava flows accumulated
Piton_de_la_Fournaise
Igneous rock composed of very small crystals invisible to the naked eye
contain also biotite, quartz, and orthoclase. Andesite Basalt Basanite Dacite Komatiite Picrite basalt Phonolite Rhyolite Trachyte Pegmatite Le Maitre, R
Aphanite
Mountain range in Iceland
shield covers about 50 km2 (19 sq mi). Four small lava shields are picrite basalt and one lava shield contains about 3 km3 (0.72 cu mi)of olivine tholeiite
Hengill
Island of Iceland
Reykjanes Ridge. The erupted rocks are from the tholeiitic magma series and picrite basalt. There is not a central volcano, but rather a number of flat-topped
Eldey
Active submarine volcano northeast of Amsterdam Island in the Indian Ocean
Hydrothermal activity occurs within the caldera. The sampled rocks are basalt and picrite basalt. The seamount is located on the mainly undersea Amsterdam–Saint
Boomerang_Seamount
Landform of Sydney
of fine-grained basalt with most of the mass of the intrusion being made up of picrite, dolerite, and high level intrusives. The picrite is a farinaceous-grained
Prospect_dolerite_intrusion
Series of alkaline magmas produced by igneous differentiation
mafic alkaline magma, either an alkalic picrite basalt or an ankaramite. This evolves to an alkali olivine basalt or basanite. Thereafter the series branches
Alkaline_magma_series
Group of volcanoes in Taiwan
and Holocene eruptions. Rock types include basaltic andesite and, to a lesser extent, basalt and picrite basalt. The highest and youngest volcano is Mount
Tatun_Volcanic_Group
Type of igneous rock
between the darker, basalt-like deposits rich in olivine and what is now called teschenite as he identified the former as picrite. Until 1892 the name
Teschenite
rock with a composition between phonolite and tephrite Picrite – Variety of high-magnesium basalt that is very rich in the mineral olivinePages displaying
List_of_rock_types
Hotspot under the Indian Ocean
Heard Island were formed in the Miocene by mildly alkalic, olivine and picrite basalt. The composition at and near Amsterdam and Saint Paul Island are distinct
Kerguelen_hotspot
Hot semifluid material found beneath the surface of Earth
(2007). "Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites". Geochemistry, Geophysics, Geosystems. 8 (2) 2006GC001390:
Magma
Volcano in Iceland
limited area. The recent lava has picrite, olivine tholeiite basalt characteristics but before the ice age there were basaltic andesite and rhyolite eruptions
Theistareykjarbunga
Group of volcanic cinder cones in Shasta County, California, United States
kilometres (0.296 cu mi). Eruptive material consisted of basalt (including picrite basalt) and dacite. Basalt erupted from Twin Buttes forms part of the Bidwell
Twin_Buttes_(California)
Lava field in British Columbia, Canada
tephra deposits consist mainly of alkali basalt and hawaiite of the Big Raven Formation, although minor picrite of this formation occurs at Sleet Cone and
Desolation_Lava_Field
Molten rock expelled by a volcano during an eruption
volcanoes or flood basalts, because the less viscous lava can flow for long distances from the vent. The thickness of a solidified basaltic lava flow, particularly
Lava
Type of igneous rock
mafic, holocrystalline, subvolcanic rock chemically equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive
Diabase
Volcano in Iceland
03 km3 (0.0072 cu mi). The lava ranges from picrite basalt, being predominantly tholeiite basalt with some basaltic andesite. During 2017 and 2018 GPS and
Hrómundartindur
Mountain in Iceland
Helgrindur volcanic system. The rocks tend to be alkaline hyaloclastite basalt or picrite basalt, however a central rhyolite formation is known. In total length
Helgrindur
Plateau in Russia
Prokhorov. - 3rd ed. 1969-1978. Pyroxenites and megacrysts from Vitim picrite-basalts (Russia): polybaric fractionation of rising melts in the mantle? Chemical
Vitim_Plateau
Geological member in British Columbia, Canada
1 million years. The Tenchen Member consists of alkali basalt and minor hawaiite and picrite. These volcanic rocks are in form of lava flows and tephra
Tenchen_Member
Lava formed due to subaqueous extrusion
Pillow lavas are commonly of basaltic composition, although pillows formed of komatiite, picrite, boninite, basaltic andesite, andesite, dacite or even
Pillow_lava
Suburb of Greater Western Sydney, New South Wales, Australia
the geology. By the latter part of the nineteenth century coarse-grained picrite, and other doloritic rock types were being extracted from William Lawson's
Pemulwuy,_New_South_Wales
Geological formation in British Columbia, Canada
southern end of the MEVC. Both members consist mainly of alkali basalt; hawaiite and picrite occur locally at higher elevations. These volcanic rocks were
Nido_Formation
either picrite basalt, alkali basalt, trachyandesite and trachyte. Areas have been observed on Bounty showing pillow basalts and giant tubular basalt to tabular/blocky
Pitcairn_hotspot
Island
filled with columnar jointed basalts. The surrounding volcanic edifice consists of interlayered picrite–olivine basalts lava flows and beds of volcanic
Zhokhov_Island
Rock formed through the cooling and solidification of magma or lava
rocks, with phenocryst species used as a prefix, e.g. "olivine-bearing picrite" or "orthoclase-phyric rhyolite".[citation needed] The IUGS recommends
Igneous_rock
Magnesium-rich igneous rock
which produce more decay heat. Lower temperature mantle melts such as basalt and picrite have essentially replaced komatiites as an eruptive lava on the Earth's
Komatiite
Indian geochronologist
I. Tikhonenko; K. Gopalan (December 1993). "Magnesian Ilmenites in Picrite Basalts from Siberian and Deccan Traps—Additional Mineralogical Evidence for
Kunchithapadam_Gopalan
Geology of state of Australia
dolomite, mudstone, tholeiite, and picrite interleaved with conglomerate. Also dykes of augite syenite, picrite and 580 Ma tholeiite dolerite were intruded
Geology_of_Tasmania
similar geological formations to the RVB but has a basalt composition with tholeiites and picrites. Hofsjökull, a large volcano with a caldera and rhyolite
Volcanism_of_Iceland
Hill in Sydney, New South Wales, Australia
chilled margin of fine-grained basalt with most of the mass of the intrusion being made up of minerals such as picrite, dolerite, and as well as volcanic
Prospect Hill (New South Wales)
Prospect_Hill_(New_South_Wales)
Science that applies chemistry to analyze geological systems
mantle convection, the formation of planets and the origins of granite and basalt. It is an integrated field of chemistry and geology. The term geochemistry
Geochemistry
Volcanic area of Iceland
lava cone surrounded by a lava apron; the older shields are made from picrite, the younger, bigger ones from olivine-tholeiite. They were probably formed
Geology of Reykjanes Peninsula
Geology_of_Reykjanes_Peninsula
Precambrian continental block located in China
the picrites is proved to represent a high temperature primary magma. In addition, the basalt shows isotopic similarity with ocean island basalt (OIB)
South_China_Craton
Geological eruption during Oligocene
Most of the lavas are basalts, but those closest to the Afar Triangle being very high titanium transitional basalts and picrites, passing outwards into
Ethiopia-Yemen Continental Flood Basalts
Ethiopia-Yemen_Continental_Flood_Basalts
Archaeological site in Linyuan, Kaohsiung, Taiwan
tools, spear tools, stone knives, and adzes, which are mostly made of picrite basalt and thus suspected to be related to Penghu, of the Niuchoutzi Culture
Fengbitou_Archaeological_Site
Nature reserve in Sydney, Australia
Cumberland Co Council 1964" in Wilshire, H.G., The Prospect alkaline diabase-picrite intrusion, New South Wales, Australia in Journal of Petrology, Vol. 8 (1)
Marrong_Reserve
Layered volcanic intrusion in Nunavut, Canada
original vertical dimension of over 6 km (3.7 mi). Rock types include picrite, peridotite, dunite, pyroxenite, gabbro and granophyre. A feeder dike of
Muskox_intrusion
Group of seamounts in the Pacific Ocean west of the Pacific-Antarctic Ridge
Rocks sampled from the Hollister Ridge have yielded basalts, alkali basalts, hawaiites, picrites and tholeiites as well as granites, which are most likely
Hollister_Ridge
Volcanic system in Iceland
volcanic belt. The lavas emitted by the Svartsengi are exclusively basalts—notably picrite and tholeiite—and emerge through effusive eruptions with a volcanic
Eldvörp–Svartsengi
Island country within the Kingdom of the Netherlands
Ma, placing them in the Cretaceous period. Their composition includes picrite pillows at the base, followed by tholeiitic lavas, then hyaloclastites
Curaçao
Hotspot partly responsible for volcanic activity forming the Iceland Plateau and island
(2007). "Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites". Geochemistry, Geophysics, Geosystems. 8 (2): Q02006
Iceland_hotspot
Ma, placing them in the Cretaceous period. Their composition includes picrite pillows at the base, followed by tholeiitic lavas, then hyaloclastites
Geography_of_Curaçao
Hill in British Columbia, Canada
Kounugu Member is the main geological member at Exile Hill. Alkali basalt, hawaiite and picrite are the main rocks composing the Kounugu Member, which erupted
Exile_Hill
a second arc collision took place. Picrite from the Duarte Complex in central Hispaniola and the Enriched Basalts in southern Haiti have been inferred
Geology_of_Haiti
Seamount in Polynesia, southeast of the Austral Islands
erupted basalt. This basalt contains phenocrysts of clinopyroxene, olivine and especially plagioclase. Additional rocks are basanite, mugearite, picrite and
Macdonald_seamount
Geographic feature in Southwestern Iceland
eruptive periods of the Reykjanes area. The volcanic rocks are basalts, with picrite, or tholeiite characteristics. While the active volcanism on the
Reykjanes
Commune in French Polynesia, France
peaks rising to over 1,000 m (3,300 ft). It is composed mainly of basalt, picrite and hawaiite. Its age is dated between 2.46 and 1.81 million years
Fatu-Hiva
Geologic formation in Japan
conclusion on the presence of picrite (with back-arc-associated pyroclastic and turbidite deposits) and high-Mg basaltic-andesite (commonly associated
Horokanai_Ophiolite
Underwater mountain near the Canary Islands
basalts, basanite, hyaloclastite, palagonite, picrite, pumices, basaltic tuffs, trachybasalt and trachyte and define an alkaline ocean island basalt suite
Tropic_Seamount
Sedimentary basin and region in New South Wales, Australia
13(2), 460–481. Wilshire: Wilshire, H.G., The Prospect alkaline diabase-picrite intrusion, New South Wales, Australia in Journal of Petrology, Vol. 8 (1)
Sydney_Basin
Arm of the North Atlantic Ocean
magmatic sea-floor spreading was accompanied by volcanic eruptions of picrites and basalts in the Paleocene at the Davis Strait and Baffin Bay. Between about
Labrador_Sea
Group of islands in the Firth of Forth, Scotland
and Inchgarvie are of igneous origin and the latter is partly made up of picrite. Studies of the landscape beneath the waters of the firth have revealed
Islands_of_the_Forth
Petrospheres from late Neolithic Scotland
used; and the famous Towie example from Aberdeenshire may be serpentinised picrite. The highly ornamented examples were mainly made of sandstone or serpentine
Carved_stone_balls
Large igneous province from the early to middle Permian
large-volume flood basalts, short duration, uplift and doming of the crust before eruption, and high temperature-melts such as komatiites and picrites. The chemical
Panjal_Traps
effusive lava in range tholeiitic (picrite and olivine-tholeiite basalts) to rhyolite. Krafla NVZ - Krafla Recently basaltic lava fissure eruptions, but historic
List_of_volcanoes_in_Iceland
Volcanic seamount in the Samoa Islands
upwelling flux. This interaction has only begun recently. Alkali basalts and picrites have been dredged from the volcano. The volcanic rocks on Vailuluʻu
Vailuluʻu
Shihmen Reservoir, Chiaopanshan, Taoyuan and Fuxing. The rocks are picrite, alkaline basalt and trachyandesite. The commons minerals are albite, olivine, clinopyroxene
Geology_of_Taiwan
Archean greenstone belt in southwestern Greenland
rocks with a range of compositions from boninite-like to tholeiites and picrites. Though boninitic amphibolites at Isua are often interpreted as evidence
Isua_Greenstone_Belt
Pacific island of Colombia
Kerr, A.C. et al. 1996. The petrogenesis of Gorgona komatiites, picrites and basalts: new field, petrographic and geochemical constraints. Lithos 37(2-3):245-260
Gorgona_Island_(Colombia)
Volcano in the Kuril Islands
low potassium content. Other rocks include andesite, basaltic andesite, basalt, dacite and picrite. The caldera-forming eruption ejected dacitic material
Lvinaya_Past
Seamount in the Pacific Ocean
Among the rocks found at Ita Mai Tai are alkali basalts, basalts, clays, hawaiites, limestone, muds, picrites, tholeiites, trachytes and trachybasalt; volcanic
Ita_Mai_Tai
Giant dyke swarm in northeast Botswana
head. A mantle plume is likely to form below extensive continental crust. Picrites and nephelinites are found in Karoo magmatism. They are known as igneous
Okavango_Dyke_Swarm
European regional geology
in the Basque country). They consist of silica undersaturated spilites, picrites, and nepheline syenites. Associated dike rocks are lamprophyres (camptonites
Geology_of_the_Pyrenees
Significant mountain range
rock of Fatric and Hronic of the Malá Fatra Mts. and Nízke Tatry Mts. Picrites are known around Banská Bystrica. Cretaceous těšínites (subvolcanic alkalic
Geology of the Western Carpathians
Geology_of_the_Western_Carpathians
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