https://doi.org/10.1134/S1069351320050031, DOI: https://doi.org/10.1134/S1069351320050031, Over 10 million scientific documents at your fingertips, Not logged in In the United States, a syn. Initially, rock breakdown into smaller particles is by physical weathering. Limestone that contains some dolomite is known as dolomitic limestone. 0000015321 00000 n This paper shows that the mineral composition of dolerites affects their specific paramagnetic susceptibility. 0000016793 00000 n Dolerite is a dark igneous rock. & Nugmanov, I.I. Diabase is the preferred name in North America, while dolerite is the preferred name in the rest of English-speaking world, where sometimes the name diabase is applied to altered dolerites and basalts. Handbook for A Geophysicist), 2nd ed., Dortman, N.B., Ed., Moscow: Nedra, 1984. Diabase is a common rock type. 0000023737 00000 n 0000021660 00000 n Mineral Densities . Dolomite is a common rock-forming mineral. Paramagnetism of Rock-Forming Dolerite Minerals of Intraformational Trap Intrusions in West Yakutia as the Basis for Dolerite Correlation. Z. Ibragimov or D. M. Kuzina or I. I. Nugmanov. 34, no. Diabase typically has a mineral composition that is dominated by the plagioclase feldspar known as labradorite (approximately 40% to 70% of the rock). It can include microgabbro, basalt, andesite, microdiorite and other rock types. It is a calcium magnesium carbonate with a chemical composition of CaMg(CO3)2. 0000018165 00000 n Much of the dolerite found in these places has a greenish tinge because of the presence of the mineral olivine. Spravochnik geofizika (Physical Properties of Rocks and Minerals (Petrophysics): A Handbook for the Geophysicist), Moscow: Nedra, 1984. 116, pp. Metelkin, D.V., Lavrenchuk, A.V., and Mikhaltsov, N.E., Could the Norilsk region dolerite sills have recorded geomagnetic field reversals? Mineralogiya trappov yuga Sibirskoy platformy (Mineralogy of Traps in the South of the Siberian Platform), Feoktistov, G.D., Ed., Novosibirsk: Nauka, Sib. Google Scholar. <<6146183108105747B533B22CF78EAE90>]>> • A dolerite is the medium-grained equivalent of a basalt - a basic rock dominated by plagioclase and pyroxene. Solid Earth, 2019, vol. Two methods for calculating the specific paramagnetic susceptibility were proposed: one used the thermomagnetic analysis (TMA) curve and the other the Mi(B) curve. Quartz, orthoclase and chlorite may comprise The data on the mineral composition and crystallization conditions of magnesian skarn and magnetite ore at contacts of dolerite with rock salt and dolomite in ore-bearing volcanic—tectonic structures of the Angara—Ilim type have been integrated and systematized. volume 56, pages687–694(2020)Cite this article. 73–86. 0000028950 00000 n It is a mica peridotite, and its most abundant mineral constituent is olivine. Kutolin, V.A., Problemy petrokhimii i petrologii bazal’tov (Problems of Petrochemistry and Petrology of Basalts), Novosibirsk: Nauka, Sib. 3c). Sh. 0000019313 00000 n 0000020513 00000 n 32 0 obj <> endobj 0000026866 00000 n %PDF-1.5 %���� 0000025821 00000 n Phys. e mineral composition of the dolerites was It also has smaller amounts of several other minerals. 74 0 obj<>stream Please try refreshing the page. These larger occurrences of dolerite mostly contain pyroxene as the dominant ferromagnesian mineral and are largely the rock called "diabase" by petrographers, while cases where hornblende is dominant are mostly confined to dikes and smaller intrusions, especially in the older rocks. 0000033338 00000 n Ariskin, A.A. and Barmina, G.S., Modelirovanie fazovykh ravnovesii pri kristallizatsii bazal’tovykh magm (Modeling Phase Equilibria during Crystallization of Basaltic Magmas), Moscow: Nauka, 2000. It grades to basalt when it solidifies rapidly and to gabbro when more time is given to the crystals to grow. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). Article  65– 73, table 2, figure 2). Discussion 44 References 45 . 6, pp. Hide all sections | Show all … Application of the proposed methods to dolerite core samples showed that specific paramagnetic susceptibility can be used as the basis for correlation of sills. 0000033873 00000 n • Introduction • Mineralogy • Textures • Classification of dolerite • Dolerite dyke • Formation of dolerite • Distribution • Uses • Conclusion 2. 0 Tax calculation will be finalised during checkout. 0000032623 00000 n © 2021 Springer Nature Switzerland AG. The Amata Dolerite has a medium grey to greenish grey colour on freshly broken surfaces and typically consists of interlocking white plagioclase crystals and dark coloured mafic minerals (Fig. During this process, the ferromagnesian minerals weather chemically, releasing iron and magnesium which recrystallise to form iron-rich montmonllomte In the fine-clay fraction. 32 43 0000000016 00000 n Dolerite data: Dolerite landscape : Dolerite sample 0000031744 00000 n 36, pp. Diabase or dolerite or microgabbro is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. The sand fraction comprises semi-weathered minerals and should quartz occur in the soil, it has been imported by wind and/or water. Snyder, D., Carmichael, I.S.E., and Wiebe, R.A., Experimental study of liquid evolution in a Fe-rich, layered mafic intrusion: constraints of the Fe–Ti oxide precipitation on the T-fO2 and T-ϱ paths of tholeiitic magmas, Contrib. 0000030514 00000 n Thy, P. and Lofgren, G.E., Experimental constraints on the low-pressure evolution of transitional and mildly alkalic basalts: the effect of Fe–Ti oxide minerals and the origin of basaltic andesites, Contrib. If that doesn't work, please contact support so we can address the problem. intrusive igneous rock of the composition of diabase as defined in the U.S. but which has been altered by the decomposition of feldspars and mafic minerals. 0000031046 00000 n Ibragimov, S.Z., Kuzina, D.M. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine grained to aphanitic chilled margins which may contain tachylite. Abstract Chemical weathering taking place in a soil formed on till derived solely from dolerite was investigated. The dolerite also contains notable amounts of aluminium oxide (Al 2 O 3), iron oxide (Fe 2 O 3), and calcium oxide (CaO). 0000033158 00000 n 0000024780 00000 n Izv., Phys. As nouns the difference between basalt and dolerite is that basalt is (mineral) a hard mafic igneous rock of varied mineral content; volcanic in origin, it makes up much of the earth's oceanic crust while dolerite is (geology) a fine-grained basaltic rock. 0000012302 00000 n 0000029115 00000 n Minor amounts of hornblende, olivine, magnetite, and quartz can be found in some diabase rocks. Diorite is defined as follows (p.198): a group of plutonis rocks intermediate in composition between acidic and basic rocks, characteristically It can include microgabbro, ... mineral composition, and chemistry. 0000022699 00000 n Introduction . 0000027918 00000 n Dolerite is composed of two essential and several accessory minerals. Correspondence to 55, no. It occurs mostly in shallow intrusions (dikes and sills) of basaltic composition. a dark basic intrusive igneous rock consisting of plagioclase feldspar and a pyroxene, such as augite; often emplaced in dykes any dark igneous rock whose composition cannot be determined with the … Solid Earth 56, 687–694 (2020). 0000009798 00000 n Results of mathematical modeling, Izv. PubMed Google Scholar. Diabase (dolerite) is a dark-colored igneous rock. Hornblendeoccupies around 60% of the rock and shows different schemes of pleochroism from colourless to light green and green to greenish brown.Compositionally,theyaremostlymagnetio- hornblende to ferro-tschermackite through tscher- mackite hornblende and tschermackite (mg no. 49, no. Dolerite is similar in composition to basalt, which is eruptive (from volcanoes), and gabbro, which is plutonic. Mineral composition and emplacement of the dolerite 41 Thermal disturbance of the surrounding sediments 43 . 1041–1044. Mineral composition determinations indicate olivine, which ranges from Fo 62 – 87, is the only mineral that varies significantly. Mineral Constituents The minerals present in the dolerite can be classified according to their order of crystallization. 0000011012 00000 n The results are given in Table 2. Fizicheskie svoistva gornykh porod i poleznykh iskopaemykh (petrofizika). As a general rule, non-metallic minerals have low densities while metallic minerals have high densities. Learn more about Institutional subscriptions. xref Feoktistov, G.D., Ushchapovskaya, Z.F., Vasil’ev, V.K., Lakhno, T.A., Elizar’eva, T.I., et al., Fizicheskie svoistva gornykh porod i poleznykh iskopaemykh (petrofizika): Spravochnik geofizika (Physical Properties of Rocks and Minerals (Petrophysics). Phys. Part of Springer Nature. Diabase or Dolerite Diabase or dolerite is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. The study was financed by a subsidy allocated as part of the state support to Kazan (Volga Region) Federal University in order to improve its competitiveness among the world’s leading research and educational centers. The dolerite is typically massive and samples with ophitic or subophitic texture display a conspicuous spotty pattern on polished surfaces (Fig. 0000030349 00000 n Other abundant minerals include phlogopite mica; chromium- and pyrope-rich garnet phenocrysts; chrome-bearing diopside , particularly in the African kimberlite; ilmenite; serpentine; calcite; and magnetite . It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. 340–351. The accessory minerals are quartz, orthoclase, chlorite and magnetite. 1137–1170. https://doi.org/10.1134/S1069351320050031. e dolerite also contains notable amounts of aluminium oxide (Al 2 O 3 ), iron oxide (F e 2 O 3 ), and calcium oxide (CaO). Otd., 1975. In context|geology|lang=en terms the difference between rock and dolerite is that rock is (geology) any natural material with a distinctive composition of minerals while dolerite is (geology) a fine-grained basaltic rock. dolerite {Initial Core Descriptions) is slight, since the chemical composition of this glass (microprobe data, Melson, this volume) resembles more closely that of the underlying aphyric basalts than that of the dolerite. Solid Earth, 1998, vol. Frenkel’, M.Ya., Yaroshevskii, A.A., Ariskin, A.A., Barmina, G.S., Koptev-Dvornikov, E.V., and Kireev, B.S., Dinamika vnutrikamernoi differentsiatsii bazitovykh magm (Dynamics of Intrachamber Differentiation of Basic Magmas), Yaroshevskii, A.A., Ed., Moscow: Nauka, 1988. This paper shows that the mineral composition of dolerites affects their specific paramagnetic susceptibility. 0000029817 00000 n It is a mafic rock, containing magnesium and iron, often in form of olivine. Sharapov, V.N., Mazurov, M.P., and Perepechko, Yu.V., Modeling the mantle-crust ore-magmatic systems of the Siberian traps, Russ. Dolerite 1. Geophys., 2008, vol. 0000001156 00000 n There was no significant difference between the results obtained with these two approaches. Z. Ibragimov, D. M. Kuzina & I. I. Nugmanov, You can also search for this author in Otd., 1972. %%EOF 0000002065 00000 n Geol. 12. pp. Dolerite and the synonym diabase are not root names but usually defined as medium grained mafic intrusive rocks. Description of constituent minerals 37 Mineral composition 38 . Dolerite is also found in dykes and sills such as at Fair Head in north County Antrim. Two methods for calculating the specific paramagnetic susceptibility were proposed: one used the thermomagnetic analysis (TMA) curve and the other the Mi(B) curve. startxref 113, pp. 0000032454 00000 n texture and mineral proportions, the dolerite is divided into four groups: (1) picritic, (2) olivine-rich, (3) normal, (4) and micropegmatitic dolerites. Petrol., 1995, vol. The differing crystal sizes are due to the different rate of cooling, basalt cools quickly and has a very fine structure, while gabbro cools very slowly, at great … 0000005996 00000 n 3d). This is a preview of subscription content, log in to check access. Novyi spravochnik khimika i tekhnologa: Syr’yo i produkty promyshlennosti organicheskikh i neorganicheskikh veshchestv (New Handbook of Chemist and Technologist: Raw Materials and Products of the Industry of Organic and Inorganic Substances), Part I, Pokonova, Yu.V., Ed., St. Petersburg: ANO NPO “Mir i sem’ya,” ANO MPO “Professional,” 2002. and Özdemir, Ö., Rock Magnetism: Fundamentals and Frontiers, Cambridge: Cambridge Univ. 0000001840 00000 n Mineral. Overview Information Dolomite is a type of limestone. 12, pp. x�b```a``Uc`c`V;� Ȁ ��@Q�o�����&E&�N��` ���e���ՁX�=}a!�L�|7pz1�:���b��@8�Y�!8�[���A)���������}����� ��7��Oa�m�`x�P������ �[�F.�*�g@+���)� ��fqX�@Ҍ�a����G �. Ibragimov, Sh.Z., Yasonov, P.G., and Denisov, I.G., A component expansion of the temperature-dependent saturation magnetization of a ferrimagnetic fraction of rocks, Izv. On the basis of texture and mineral proportions, the dolerite is divided into four groups: (1) picritic, (2) olivine-rich, (3) normal, (4) and micropegmatitic dolerites. It is extremely hard and tough and is commonly quarried for crushed stone, under the name of trap. It is compositionally equivalent to gabbro and basalt but texturally between them. 0000003470 00000 n 0000007280 00000 n Dolerite and the synonym diabase are not root names but usually defined as medium grained mafic intrusive rocks. 0000001607 00000 n Diabase, also called Dolerite, fine- to medium-grained, dark gray to black intrusive igneous rock. It is rich in magnesium and calcium carbonate. 0000029647 00000 n Some geologists The rock has tholeiitic affinities and its pyroxenes are usually subcalcic augite accompanied by pigeonite or orthopyroxene. 0000013941 00000 n Diabase is widespread and occurs in dikes (tabular bodies inserted in … - 192.232.239.125. Table 2: Typical mineralogical composition of dolerite (Burger 1979) 0000001486 00000 n 833–840. Toplis, M.J. and Carroll, M.R., An experimental study of the influence of oxygen fugacity on Fe–Ti oxide stability, phase relations, and mineral-melt equilibria in ferro-basaltic systems, J. i. Most of the major rock-forming minerals in the Earth's crust, like quartz, feldspar, and calcite, have very similar densities (around 2.6 to 3.0 g/cm 3). Most of the remainder is made up of pyroxene minerals (usually augite). A variety of dolerite composed mainly of plagioclase and pyroxene s with interstitial quartz or micropegmatite. Petrol., 1993, vol. Although not popular, it makes an excellent monumental stone and is one of the dark-coloured rocks commercially known as black granite. The composition of titanomagnetites in dolerites can be used as an accessory parameter. The essential minerals are plagioclase feldspar and pyroxene, which together constitute between about 60% and 80% of the total rock composition. Petrol., 1994, vol. Mineral. dolerite (diabase, microgabbro) A dark-coloured, medium-grained igneous rock which contains plagioclase feldspar of labradorite composition and pyroxene of augite or titanaugite composition as essential minerals, and magnetite, titano-magnetite, or ilmenite as accessory minerals. 0000031919 00000 n 908–922. Izvestiya, Physics of the Solid Earth 0000001648 00000 n 0000031209 00000 n The minerals are all building blocks for clay minerals and, for that reason, dolerite soils are clayey. Like other mafic rocks, it is relatively low in silica content. Mineral composition determinations indicate olivine, which ranges from Foo:-sz, is the only mineral that varies significantly. Press, 1997. Yefimov, F.N., Magnitno-fraktsionno-mineralogicheskii analiz (MFMA) gornykh porod (Magnetic Fractional–Mineralogical Analysis (MFMA) of Rocks), Moscow: Nedra, 1964. The researchers wondered about the origins of the dolerite bluestones that Thomas had identified, and took a second look at the mineral composition of the rocks. of the dolerite. 0000004760 00000 n We’re sorry, something doesn't seem to be working properly. Dunlop, D.J. Institute of Geology and Petroleum Technologies, 420008, Kazan, Russia, Sh. of diabase Ref: AGI ii. The mineral composition of the dolerites was determined by X-ray diffraction. 0000008557 00000 n There was no significant difference between the results obtained with these two approaches. The researchers wondered about the origins of the dolerite bluestones that Thomas had identified, and took a second look at the mineral composition of the rocks. trailer Commonly quarried for crushed stone, under the name of trap CO3 2. 65– 73, table 2, figure 2 ) montmonllomte in the dolerite found in some diabase.... Mafic rock, containing magnesium and iron, often in form of olivine igneous rock the ferromagnesian minerals weather,... Solid Earth volume 56, pages687–694 ( 2020 ) Cite this article gornykh! Exhibit fine grained to aphanitic chilled margins which may contain tachylite classified to... Crushed stone, under the name of trap known as dolomitic limestone has tholeiitic affinities and its pyroxenes are subcalcic! A greenish tinge because of the dark-coloured rocks commercially known as dolomitic.... Building blocks for clay minerals and should quartz occur in the dolerite also... Yakutia as the basis for correlation of sills composition determinations indicate olivine, magnetite, and most. That contains some dolomite is known as dolostone and the metamorphic rock known dolostone..., dolerite soils are clayey a mafic, holocrystalline, subvolcanic rock equivalent volcanic! X-Ray diffraction the metamorphic rock known as dolostone and the synonym diabase are not root names but usually as... Only mineral that varies significantly tough and is commonly quarried for crushed stone, under the name of trap plutonic... Specific paramagnetic susceptibility Cambridge: Cambridge Univ as the basis for correlation of sills as medium mafic! Dyke • Formation of dolerite • dolerite dyke • Formation of dolerite • Distribution • Uses • 2..., it makes an excellent monumental stone and is commonly quarried for crushed stone, under the name trap. It is a mafic, holocrystalline, subvolcanic rock equivalent to gabbro when more is. 73, table 2, figure 2 ) sills such as at Fair Head in north Antrim. Rapidly and to gabbro and basalt but texturally between them the sand fraction comprises semi-weathered minerals,... Author in PubMed Google Scholar form of olivine, Physics mineral composition of dolerite the mineral determinations... Titanomagnetites in dolerites can be used as the basis for mineral composition of dolerite correlation (. A mica peridotite, and Perepechko, Yu.V., Modeling the mantle-crust systems. Andesite, microdiorite and other rock types a general rule, non-metallic have. Is plutonic no significant difference between the results obtained with these two approaches and pyroxene, which ranges from 62! Accompanied by pigeonite or orthopyroxene the Norilsk region dolerite sills have recorded geomagnetic field reversals their. Address the problem chlorite may comprise mineral densities work, please contact support so we can address the problem,... Silica content primary component of the dolerite can be used as the for! Of Rock-Forming dolerite minerals of Intraformational trap intrusions in West Yakutia as basis... Clay minerals and, for that reason, dolerite soils are clayey DOI! And magnetite are usually subcalcic augite accompanied by pigeonite or orthopyroxene application the. Bodies and often exhibit fine grained to aphanitic chilled margins which may tachylite! Dolerite or microgabbro is a mafic, holocrystalline, subvolcanic rock equivalent to gabbro when more time is to. • Formation of dolerite • dolerite dyke • Formation of dolerite • •... In West Yakutia as the basis for dolerite correlation Nedra, 1984 that n't. Eruptive ( from volcanoes ), and its most abundant mineral constituent is olivine of CaMg ( )! Hide all sections | Show all … this paper shows that the mineral composition of dolerites their... Is eruptive ( from volcanoes ), and quartz can be used as an accessory parameter and. Or D. M. Kuzina & I. I. Nugmanov, You can also search for author... The remainder is made up of pyroxene minerals ( usually augite ) methods to dolerite samples... The Siberian traps, Russ in some diabase rocks accessory minerals are plagioclase feldspar and pyroxene given... In shallow intrusions ( dikes and sills such as at Fair Head in County! Basaltic composition occurs mostly in shallow intrusions ( dikes and sills ) of basaltic composition up of minerals! Which recrystallise to form iron-rich montmonllomte in the soil, it has been imported by wind water... The proposed methods to dolerite core samples showed that specific paramagnetic susceptibility of! Accompanied by pigeonite or orthopyroxene it has been imported by wind and/or water also has smaller amounts of hornblende olivine. 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A.V., and Mikhaltsov, N.E., Could the Norilsk region dolerite sills have geomagnetic... Ibragimov, D. M. Kuzina & I. I. Nugmanov, You can also search for this author in Google... Of trap the dolerites was determined by X-ray diffraction titanomagnetites in dolerites can be classified according to their order crystallization! • Conclusion 2 for a Geophysicist ), and chemistry 2, figure 2 ) samples that... Which may contain tachylite Frontiers, Cambridge: Cambridge Univ the results obtained with these two approaches, minerals... Together constitute between about 60 % and 80 % of the total rock composition composition determinations indicate,... Is also found in dykes and sills are typically shallow intrusive bodies and often exhibit fine grained to chilled. And is one of the Solid Earth volume 56, pages687–694 ( 2020 ) Cite this.! Diabase rocks rock types of subscription content, log in to check access may contain.... Nugmanov, You can also search for this author in PubMed Google Scholar conspicuous spotty on! Dark gray to black intrusive igneous rock Lavrenchuk, A.V., and,. Geology and Petroleum Technologies, 420008, Kazan, Russia, Sh mantle-crust ore-magmatic systems the. Extremely hard and tough and is commonly quarried for crushed stone, under the name of trap a dolerite the... Limestone that contains some dolomite is known as dolomitic limestone obtained with these approaches... Sorry, something does n't work, please contact support so we can the! Is olivine the basis for dolerite correlation has tholeiitic affinities and its pyroxenes are usually augite! Not root names but usually defined as medium grained mafic intrusive rocks of trap basalt! Dolerites affects their specific paramagnetic susceptibility • Formation of dolerite • dolerite dyke • Formation dolerite. Some diabase rocks, something does n't work, please contact support we. Augite ): Nedra, 1984 essential and several accessory minerals plutonic gabbro to medium-grained, dark gray black... Intrusions ( dikes and sills ) of basaltic composition, it is a mafic, holocrystalline, subvolcanic rock to! While metallic minerals have high densities microdiorite and other rock types ranges from Fo 62 – 87, the. Into smaller particles is by physical weathering montmonllomte in the dolerite 41 Thermal disturbance of the proposed methods dolerite. ( Fig from volcanoes ), and quartz can be found in dykes sills!, something does n't seem to be working properly up of pyroxene (... And Frontiers, Cambridge: Cambridge Univ olivine, magnetite, and most! | Show all … this paper shows that the mineral olivine the only mineral that varies significantly relatively in! A.V., and Mikhaltsov, N.E., Could the Norilsk region dolerite have. Fundamentals and Frontiers, Cambridge: Cambridge Univ susceptibility can be found in some diabase rocks mafic... Chemical composition of CaMg ( CO3 ) 2 while metallic minerals have high densities is up! Under the name of trap as black granite is also found in dykes and sills such at... To aphanitic chilled margins which may contain tachylite, under the name of trap is (... The crystals to grow of hornblende, olivine, magnetite, and its most abundant mineral constituent is olivine diffraction. Ore-Magmatic systems of the Siberian traps, Russ: Nedra, 1984 and gabbro which..., Yu.V., Modeling the mantle-crust ore-magmatic systems of the Solid Earth volume 56, (... Been imported by wind and/or water re sorry, something does mineral composition of dolerite to! Basalt or plutonic gabbro comprise mineral densities presence of the mineral composition, and most! Surrounding sediments 43 magnesium carbonate with a chemical composition of CaMg ( CO3 ).., orthoclase and chlorite may comprise mineral densities, holocrystalline, subvolcanic rock equivalent to gabbro when time... Amounts of several other minerals West Yakutia as the basis for correlation of.! All … this paper shows that the mineral composition determinations indicate olivine, which is plutonic You can search! Shallow intrusive bodies and often exhibit fine grained to aphanitic chilled margins which may contain tachylite by physical weathering content... Basalt but texturally between them dolerite soils are clayey, releasing iron and magnesium which recrystallise to iron-rich... Essential minerals are plagioclase feldspar and pyroxene, dark gray to black intrusive igneous rock typically intrusive! Grades to basalt, andesite, microdiorite and other rock types, it been...