The rocks are divided into six lithostratigraphic sequences, two plutonic suites, and an ophiolitic suite. - Completion of a series of geological maps of the Arabian Shield in different scales. The youngest lithostratigraphic sequence, the Jubaylah Group, is essentially postcratonic, although it is the end product of the collisional culminant orogeny. Download the latest version of Adobe Reader, free of charge. ° 100 km. a 8070 arabian shield -0.15 (-0.51%) 1442/07/16 28/02/2021 08:48:15 Arabian Shield Cooperative Insurance Co. announces its Annual Financial Results for the Period Ending on 2020-12-31 1) and are particularly extensive in the northeastern part of the Arabian shield (Fig. 1 a Map of the Arabian–Nubian Shield (Modified from Stern et al. In association with orogenic crustal heating, some of the low-density, more silicic tonalitic and trondhjemitic rocks of the primary crust rose as gneiss domes. The surveys shall produce geologic maps of different scales for all of the regions. The outcrops of the shield rocks are of the Late Proterozoic Eonupper Riphean to Vendian or Infracambrian epochs, including the Ediacarian System. During subsequent orogeny, most of the rocks were intensely deformed and mostly metamorphosed to upper greenschist facies, but rising in places to the almandine-amphibolite facies. About 3,000 m of evaporite was deposited on the young Red Sea oceanic crust during the late Miocene desiccation crisis. It has been edited and reviewed by staff of the Saudi Geological Survey. Harrat Rahat is a recent volcanic area located along the Makkah-Madinah-Nafud volcanic line in western Saudi Arabia. these are: (1) They are several thousand meters thick. The Shield is well exposed in the western part of Arabia and locally exposed to the east as in Dhofar or Socotra. Within this rift valley, Baid freshwater tuffaceous lakebeds were deposited between mafic and silicic volcanoes. Two western sequences consist of the Jiddah (Samran) and BaishBahah Groups and range in radiometric age from about 900 to 800 m.y. Final east-west compression of the entire shield from about 580 to 560 m.y. Geographically - and from north to south - the ANS includes parts of Israel, Palestine, Jordan, Egypt, Saudi Arabia, Sudan, Eritrea, Ethiopia, Yemen, and Somalia. The mafic and ultramafic volcanic and plutonic rocks of the ophiolitic suite everywhere were emplaced tectonically and are probably of different ages in different places. The continental margin was deformed and greatly extended at this time. The Amar Arc is located along the eastern margin of the Arabian Shield (Figure 1). DOI: 10.5897/JGMR2013.0182 Corpus ID: 14974493. The early Tertiary beds contain vertebrate fossils of coastal marine or estuarine environment 250 km east of the Red Sea in the central shield. You can also benefit from the additional 10% discount when renewing your vehicle insurance with Arabian Shield. Accident map. This tectonic boundary is characterized by complex faulting and Tertiary dike injection and volcanism. Topographic and geodynamic map for Arabia showing the Arabian Shield and the Arabian Platform. The SGS conducts geologic surveys in all regions of Saudi Arabia, with specific focus areas in the Arabian Shield and in the sedimentary cover. Copy of a valid vehicle registration. - Compilation of geologic maps of Saudi Arabia (maps of a portion of the continental shelf). Official websites use .gov The Shatt al-Arab river delta forms the northwest shoreline. In the Arabian Plate, the Arabian Shield extends from south to north into Yemen, Saudi Arabia, and Jordon (Fig. The SGS conducts geologic surveys in all regions of Saudi Arabia, with specific focus areas in the Arabian Shield and in the sedimentary cover. Secure .gov websites use HTTPS - Bijadia Quadrangle mapping project in a scale of 1:100,000 in the central-eastern area of the Arabian Shield. The plutonic rocks of the granitic suite in association with both sequences have syntectonic and posttectonic phases, are products of the orogenies, and are the principal new ingredients making up the craton. For best results viewing and printing PDF documents, it is recommended that you download In the west of the country, the Arabian Shield is a major source of precious and basic minerals such as gold, silver, copper, zinc, chromium, manganese, tungsten, lead, tin, Aluminum and iron. - Study of the composition and geologic characteristics of crystalline and sedimentary rocks in order to locate potential deposits of minerals and industrial rocks. The Arabian Shield is a part of a larger geological ensemble, the Arabian-Nubian shield, which covers several countries, mainly Egypt, Eritrea, Ethiopia, Saudi Arabia, Somalia, Sudan and Yemen (2200 km NS x 1200 km EW). The most reliable isotopic ages range from about 900 to 560 m.y., but some Middle Proterozoic rocks may be present in the easternmost shield. to form the large primary crust of the Arabian Shield. The hiatus was followed by extensive deposition of the Cambro-Ordovician Saq Sandstone in the north and northeast and the Wajid Sandstone in the southeast and south of the shield. The African Shield, sometimes called the Ethiopian Shield, extends eastward to include western Saudi Arabia and the eastern half of Madagascar. Pre-Red Sea configuration suggests that the total area of the Arabian-Nubian Shield is over 2.7 million square kilometers. Most of the plutonic rocks of the dioritic suite are dioritic, but they range from gabbro to trondhjemite and rarely contain potassium feldspar. 1985. 1.1). produced the Red Sea axial trough, consisting of oceanic crust, as well as renewed uplift and tilting of the three tectonic provinces in response to compression from counterclockwise rotation against the Dead Sea Rift. Simplified geological map of the Arabian Peninsula. Al-Koulak, M.Z.M.I. Part or all of this report is presented in Portable Document Format Each province was assigned a unique number; the first digit is the region number. The blue boxes indicate heat flow measurements from previous studies (Förster et al., 2007, Galanis et al., 1986, Gettings, 1982). The geologic data was collected and processed. The Peace Shield program, built for the Kingdom of Saudi Arabia, required delivery of a nationwide ground-air defense, and command, control, and communications system to … 2). The Arabian Shield comprises the Precambrian rocks within the Arabian Plate that are exposed in the western part of the Arabian Peninsula—in western Saudi … An attempt was made to number the provinces in geographical order or groups with numbering starting at the Arabian Shield (see Pollastro and others, 1998). The ANS in the north is exposed as part of the Sahara Desert and Arabian Desert, and in the south in the Ethiopian Highlands, Asir province of Arabia and Yemen Highlands. 'Gulf of Fars') is a mediterranean sea in Western Asia.The body of water is an extension of the Indian Ocean (Gulf of Oman) through the Strait of Hormuz and lies between Iran to the northeast and the Arabian Peninsula to the southwest. From S.W. Map showing areal distribution of thorium caused the craton to fracture along the large northwest-trending, left-lateral faults and elsewhere along lesser, northeast-trending, right-lateral, conjugate faults of the N ajd fault system. A .gov website belongs to an official government organization in the browser may not display or print as intended. During late early Miocene time, the Red Sea opened at a rate of 4.4 cm/yr in a firststage movement while continental dikes and swarms of oceanic tholeiitic dikes, gabbro, and granophyre plutonic rocks were intruded into the rift sedimentary and volcanic rocks at the newly formed continental margin. The Murdama (Shammar) Group and the younger part of the granitic suite are about 660 to 580 Ma old and are associated with the culminant orogeny and late cratonization that was shieldwide. Approximately 2,200 gravity stations on a 10-km2 grid were used to construct a simple Bouguer gravity anomaly map at 1:2,000,000 scale along a 150-km-wide by 850-km-long strip of the Arabian Peninsula from Sanam, southwest of Ar Riyad, through the Farasan Islands and including offshore islands, the coastal plain, and the Hijaz-Asir escarpment from Jiddah to the Yemen border. Geological units: Arabian Shield (including Harrats) Arabian Platform Zagros fold belt Red Sea basin Ophiolites in Oman (Semail-ophioltes, oduction of ocean floor) Arabian Shield. The surveys shall produce geologic maps of different scales for all of the regions. Greenwood, W. R. (1979). dominantly exposed in the western part of the Arabian Peninsula and the eastern part of Africa (Fig. The first modern mapping of the Kingdom of Saudi Arabia was established after an inter-governmental agreement with the United States in 1954. Application was made to incorporate a Saudi cooperative insurance company following the licensing and regulation of the insurance industry in Saudi Arabia. Harrat Khaybar, one of Saudi Arabia's largest volcanic fields, covers an area of more than 14,000 km2 north of Madinah (Medina). about viewing, downloading, and printing report files can be found here. With Arabian Shield, getting your vehicle insured at an affordable price is a lot easier than you think, enjoy up to 60% discount when your traffic record is free of claims. Repeated, periodic uplifts of the Arabian Shield have continued this faulting and basement uplift until historic times, as shown by the N-S trending Late Tertiary-Quaternary lava fields (Harrat) and cinder cones along fractures in the shield, with eruption as recently … The two sequences, including largely the Ablah (Al Ays) and Murdama (Shammar) Groups, consist of abundant sedimentary rocks, commonly arkosic, that are the erosional products of the orogenic mountains. The Persian Gulf (Persian: خلیج فارس , romanized: Xalij-e Fârs, lit. They are also used in mining and quarrying activities. Low cost Health, Personal Accident Insurance together with great Customer service call us now on 800-1-247-247 and get an instant quote About 14 or 15 m.y., as the first-stage spreading stopped, the Red Sea Escarpment rose; its erosion caused deposition of coarse conglomerate of the Bathan Formation. The maps served as general guides for development of natural resources, including water supplies, ore deposits, and building materials. This late movement caused widespread major stream capture, especially along the wadis that formerly drained southwesterly or northwesterly, the channels turning westward through narrow gorges to the coastal plain and the Red Sea. the documents to your computer and open them with Adobe Reader. Western Arabia lies within the low-latitude desert of north Africa and the Middle East, the core being the Arabian segment of the African Shield. designated G. F. Brown responsible for the western Arabian shield region in which he had previously worked under U.S. foreign-aid programs. LockA locked padlock Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Reconnaissance mapping of these crystalline rocks, together with bordering sedimentary rocks and volcanic flows, begun in 1950, resulted during the next 13 years in a series of geologic and geographic maps without extensive texts. Search for Renewable Energy Sources and Water, Environmental Impacts and Occupational Safety of Mining Activities, Paleontology of Vertebrate and Invertebrate Fossils, Environmental Impacts of Natural Materials. Marginal marine sediments were deposited in a western tongue of the latest Tethys Sea as late as Eocene on the western shield and at least as far south as Jiddah. eastern Arabian Shield..... 23 3. ) or https:// means you’ve safely connected to the .gov website. Low cost Health, Personal Accident Insurance together with great Customer service call us now on 9200-0-9369 and get an instant quote Erosional products of this more localized deformation were the sedimentary rocks of the Jubaylah Group, which also includes intercalated andesitic to basaltic volcanic rocks of a mafic alkalic compositional trend. One mass of anorthosite near Jabal Khida' on the central eastern edge of the shield may be a fragment of this old continental plate in that associated granodiorite may be as old as 1,600 to 1,800 Ma. ARABIA, PRE-ISLAMThe term "Arabia" has been variously applied in both modern and ancient times to refer to a vast territory stretching from the borders of the Fertile Crescent in northern Syria to the tip of the Arabian Peninsula and from the borders of the Euphrates to the fertile regions of the Transjordan. The Arabian ShieLd The Arabian Shield is a stable The shield outcrops are divided into three tectonic provinces by N. 45°W.- trending shear zones of the Najd fault system of latest Proterozoic and possibly earliest Paleozoic time. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. The Arabian-Nubian Shield (ANS) is an exposure of Precambrian crystalline rocks on the flanks of the Red Sea. Arabian Shield began operations in 1998 when the company, at that time incorporated as a Bahraini Company, was represented in Saudi Arabia by an agent. Copy of a valid insurance policy. A N.E.-trending field traverse across the Arabian Shield (approximately 41 o 00°E/19 o 30°N to 45°30°E/23°30°N), combined with photo-interpretation, existing maps, and geophysical data, has resulted in a strip-map covering about 60. This map reveals distinct structural/lithological provinces. The Cambrian Siq Sandstone had already been deposited in the northern part. The core of complex basement rocks accounts for about 670,000 km2, or one-third of the Arabian Peninsula. The list of provinces sorted by number is shown to the right of the map. Some ophiolite occurs as obducted blocks, but most is highly deformed and altered to serpentinite in fault zones that mostly define sutures between different tectonic blocks or terranes within the shield. Copy of insurer driver’s license. Except for shallow marine sandstone of problematic Cretaceous age deposited on the Amran Formation in the south.western shield and on Precambrian rocks in the northwestern shield, the younger beds on the shield are Paleocene and younger, with the possibility that the lowermost are upper Maestrichtian. Gneiss domes were a significant part of these cratonization orogenies. The late plutonism of the culminant orogeny was distinctly bimodal in that subordinate gabbroic rocks are associated with the granites. Thirty or more basins are known in the region (Fig. A lock ( During the middle and late Paleozoic, broad epeirogeny caused further erosion of the shield until marine transgression deposited the Upper Permian Khuff Formation at least in the eastern part of the shield. Professional Paper in the southwestern part of the shield. The basins are mostly Neoproterozoic III (650–540Ma) in age, ranging from <670 to … Field and petrographic characterization of some building, ornamental and industrial raw materials of the Tertiary sedimentary succession of Haddat Ash Sham Area, West Central Arabian shield, Saudi Arabia Mainly in the east, extensive sedimentary formations contain industrial minerals such as gypsum, feldspar, mica, Sulphur and salt. The collisional edge of an old continental plate (or tectonic fragments thereof), suspected on the eastern edge of the Arabian Shield, has not been shown with certainty to be exposed. Presumably, widespread contamination from such an old continental crust affects U/Pb, Sm/Nd, Rb/Sr, and common lead ratios in the young plutonic rocks of the easternmost shield. Rainfall in Arabia is meager and episodic, and vegetation is sparse except in isolated copses on the crest of the Hejaz Range. The inevitable collisional events during consumption of such a large volume of oceanic crust invariably led to numerous collisional orogenies that collectively encompass the widely known Pan African tectonic episode. to N.E. 2006), showing the location of the study areas and regions where pre-Neoproterozoic crust is found. United States. These rocks make up the primary, or first-formed, crust of the shield. Various building blocks or terranes of the andesitic and dioritic primary crust were collisionally agglomerated during the Ablah orogeny, early cratonization, whereas the entire shield as currently exposed was further collisionally accreted and compressionally consolidated during the culminant orogeny, final cratonization. The core of complex basement rocks accounts for about 670,000 km2, or one-third of the Arabian Peninsula. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University. The crystalline rocks are mostly Neoproterozoic in age. - Uwaiqilia Quadrangle geologic mapping project in the northern borders. Two other lithostratigraphic sequences with an associated plutonic granitic suite are the products of two mountain-building episodes during which the primary crust was greatly thickened and converted into craton. Only during the culminant orogeny, late magmatic evolution produced syenogranite and alkali-feldspar granite commonly in circular and ring-structured plutons and with associated explosive volcanic deposits (Shammar Group); final products, some of which have economic potential, were peralkalic and peraluminous. In the southwestern shield, the nonmarine Upper Triassic Khums Sandstone was deposited variably on Wajid or Precambrian rocks and is overlain by limestone of the middle Upper Jurassic Amran Formation. A second stage of sea-floor spreading about 4-5 m.y. - Study on the stratigraphic sequences of Saudi Arabia (the report on Paleozoic rocks has already been completed and is now under technical review). Most of the layered rocks are andesitic, but they range from basalt to dacite and in places contain intercalated pillow basalt, marble, chert, and carbonaceous or graphitic schist. The SGS also creates and publishes detailed structural maps, which are used in infrastructure projects and in geologic hazard studies. To the west, the Shield abutls the Tertiary rocks at the eastern edge of the Red Sea sea-floor spreading system. 1.1). An intensive exploration program that began in 1963 and involved numerous geologists has vastly increased geologic information. Epeirogenic uplift, erosion, and cooling of the uppermost shield during Early and Middle Cambrian time is indicated by an average fission track age of 510±52 m.y., on sphene from diorite (hornblende K-Ar age of 615±12 m.y.) Arabian Shield offers a strong potential for geothermal energy. The sequences and an associated dioritic suite become younger toward the eastern shield, that is, the primary crust of the shield youngs toward the east. Overview of geology and aquifers. The great harrats of flood basalt erupted on th~ western shield during late Oligocene and early Miocene at the same time a 2,000-kmlong continental rift valley developed along the future Red Sea axis. Subproject 4.1.1.1.6 — Compilation and updating of the Arabian shield digital map. More information These basement rocks of the Arabian Shield are well exposed on the uplands, scarp mountains, and coastal pediments where the Phanerozoic cover rocks have been stripped as a result of Paleozoic epeirogeny and Tertiary ramping. Map showing areal distribution of uranium values..... 28 5. An official website of the United States government. Partial melting in the middle or lower crust below the gneiss domes produced large volumes of granitic magma that intruded the gneiss domes as granodioritic batholiths. This study is oriented to identify the geothermal potential of Harrat Rahat. In January 1955 F. A. Davies, Chairman, Board of Directors, Arabian-American Oil Co., approved Aramco's participation and appointed the late R. A. ; the eastern sequence consists of the Halaban (Hulayfah) Group and ranges from 800 to about 700 m.y. Comparison of flora with similar species in the Sudan, where records of rainfall have long been kept, allows evaluation of mean annual precipitation. Ternary diagram showing normative quartz, albite, and orthoclase data for granite samples from the southeastern Arabian Shield..... 24 4. However, only a limited amount of exploration effort has taken place. A trapezoidal region of Precambrian crystalline rocks lies along the northeast flank of the Red Sea, with two long prongs extending northwest and southeast for a total of 1,800 km. (PDF). Thousands of kilometers of oceanic crust had to be subducted in about 300 m.y. A spectacular 100-km-long N-S linear vent system contains felsic lava domes, tuff rings, the Jabal Qidr stratovolcano, as well as numerous small basaltic cones. The Ablah Group and the older part of the granitic suite are about 775 to 740 Ma old and are associated with the Ablah orogeny and early cratonization in the western and earlier formed half of the shield. Share sensitive information only on official, secure websites. PDF documents opened from your - Study of geologic structures related to subsidence and cavitation in areas with sedimentary cover, fractures, landslides, and crustal movements in the Kingdom’s regions. Three of the lithostratigraphic sequences consist of mafic to silicic volcanic rocks and volcanic-derived clastic rocks which, with their subvolcanic plutonic rocks of a dioritic suite, probably formed in oceanic island arcs during convergent plate tectonism. These two provinces are separated by the flat-lying median N ajd province, which is chiefly bounded by the principal Najd faults. Fig. African orogen (EAO) in the Arabian-Nubian shield. Less abundant calc-alkalic to alkalic volcanic rocks, commonly dacitic and rhyolitic, are intercalated with the sedimentary rocks. Geologic Map GM-37 (with Explanation). The northwestern province, consisting of the Ash Shifa'- Hisma upland as well as Jabal Shammar farther east, similarly was uplifted and tilted. - Wadi Kamal mapping project in a scale of 1:100,000 in the western Arabian Shield. Product names used in this report are for descriptive purposes and in no way imply endorsement by SGS. 560-A, Explore recent publications by USGS authors, Browse all of Pubs Warehouse by publication type and year, Descriptions of US Geological Survey Report Series, Geology of the Arabian Peninsula shield area of western Saudi Arabia(1984), Geology of the Arabian Peninsula; shield area of western Saudi Arabia. Western Arabia lies within the low-latitude desert of north Africa and the Middle East, the core being the Arabian segment of the African Shield. Wandering bedouin following fodder created a delicate balance between population and water supply-now disturbed by wells drilled in alluvium and lava fields. The granitic suite during both orogenies consists of early, syntectonic granodiorite batholiths associated with the gneiss domes and late, posttectonic monzogranite plutons. onlap unconformably upon the Shield (Powers and others, 1966). Chemical analyses show that the primary shield rocks, regardless of age, are principally calc-alkalic with some associated tholeiitic varieties. Three estimates from proved workshop and spare parts by Traffic (in case the vehicle is reparable) Three estimates from proved showrooms or Sheikh Al Maarith Report. 1:500,000 scale mapping was compiled from aerial photographs by United States Geological Survey (USGS) and published in two parallel series, each covering Saudi Arabia in 21 sheets. - Completion of a series of geological maps of the sedimentary cover in all regions of the Kingdom using different scales. The southwestern province, the 'Asir1 upland, was sharply uplifted and tilted to the northeast during the Neogene.
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