| Areas of overlying sandy sediments were removed to expose the fossiliferous clay. |
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| Of the three Triassic and Jurassic fossiliferous formations, no angular fragments were found from the shell beds. |
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| The section is very fossiliferous, with an abundant brachiopod, bryozoan, coral, and phacopsid trilobite assemblage. |
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| The richly fossiliferous Namurian bed is packed with both brachiopods and goniatites. |
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| Bed 4 comprised medium grey fossiliferous mudstone with limonitic ooids and phosphatic nodules. |
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| The white to gray flint bed, 2.5 meters thick, rests on gray fossiliferous Vanport Limestone. |
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| The La Meseta Formation is the best exposed and most fossiliferous rock unit of Eocene age in Antarctica. |
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| Strata were examined in the field for evidence of fossil content, and those horizons that appeared to be fossiliferous were sampled in bulk. |
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| These rocks are thought to be Ordovician in age based on correlation with fossiliferous rocks at the same structural horizon near Nyalam. |
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| The fossiliferous horizons occur in greenish to greyish siltstones and brown to black fissile shales associated with mollusc shells. |
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| It is faced with hammered fossiliferous limestone blocks from Saint-Marcdes-Carrières. |
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| The Fossil Bluff Group consists of fossiliferous, shallow marine to sub-aerial fluviatile sandstones and conglomerates of probable fore-arc origin. |
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| In this great class we should probably have to descend far beneath the lowest known fossiliferous stratum to discover the earlier stages, by which the eye has been perfected. |
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| The lower part of the section consists of natural outcrops at the hillside, whereas the higher, more fossiliferous strata are exposed by artificial trenches. |
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| Prominent rocks above the plateau are constituted by hard dolomitic limestones which protect fossiliferous black marls. |
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| The same margin of error applies for younger fossiliferous rocks, making absolute dating comparable in precision to that attained using fossils. |
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| Later chert is light coloured, follows the bedding, and is usually fossiliferous. |
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| Layers of fossiliferous rocks provide a record of the sequence of their deposition. |
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| The limestone is generally very fossiliferous and massive and occurs in light grey beds of uniform thickness, which can be easily carved. |
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| Area 5: The lower Grosmont is generally fossiliferous limestone as the Duvernay shales isolated the carbonates from any dolomitization process. |
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| Area 1: This fossiliferous limestone was deposited in a semi-restricted marine shelf environment. |
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| The presence of five distinct fossiliferous levels provides the opportunity for comparative and evolutionary studies through time. |
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| The fossiliferous beds at Felsoors have been studied for over 130 years. |
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| A second scenario is that quarrying operations exposed easily weathered fossiliferous shales, mudstones, or fine-grained sandstones interbedded with limestones. |
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| Sedgwick began fieldwork at Barmouth in north Wales in 1831 where he established the order of local rocks and gave the name Cambrian to the oldest fossiliferous strata. |
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| This is a very weathered outcrop of Free Grant, which consists of thin-bedded to laminated grey quartzose sandstone and siltstone, generally non-calcareous and locally fossiliferous. |
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| The base of the Jacquet River Formation on the northwestern limb of the Jacquet River Syncline is defined by the first appearance of grey, marine, locally fossiliferous mudstone or siltstone. |
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| Visitors to the fossiliferous limestone outcrop of the Ottawa Formation at the Booth Street headquarters can immediately see that the Geological Survey of Canada is based on fossils. |
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| These deposits are generally well sorted and commonly fossiliferous. |
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| South of the RBMF, the LaPlante Formation is exposed on the south bank of Tetagouche River between Lower and Middle Tetagouche lakes, but the limestone here is not strongly deformed and is generally very fossiliferous. |
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| Some of the Silurian and Devonian sedimentary rocks are fossiliferous. |
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| Page 30 of 67 Mineralization at Toqui occurs as manto deposits hosted by a five metre to 12 metre thick bed of fossiliferous limestone, known as the Main Manto unit. |
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| The total thickness is about 10,000 m. The Lower Cretaceous is composed mainly of alternating sandstone and siltstone beds with turbidites, and is not fossiliferous. |
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| To shed light on the question, a comparison can be made between Miguasha fossils and those from other fossiliferous sites known to be of the same age. |
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| The fossiliferous rock succession is exposed in Switzerland on MSG, and also in the immediately adjacent area of Italy, in the area around Besano. |
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| It is internationally renowned to geological science as a uniquely important occurrence of fossiliferous marine Triassic deposits, which has been the subject of focussed and disciplined scientific study and management. |
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| This geologic interpretation is known as catastrophism, which was a long-standing view of fossiliferous rocks prior to the 1800s when a uniformitarian view began to take hold. |
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| Represented by two beds of limestones with lenticular fossiliferous elements, of beige to purple colour which constitute the core of the anticline. |
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| Field observations suggest that the fossiliferous horizon is dominated by in situ oyster bioherms. |
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| By 220 million years ago, in the Late Triassic, the continental margins of the new, narrow Tethys Sea were commonly covered by shallow water over fossiliferous carbonate shelf sediments. |
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| Significance of fossiliferous Middle Cambrian rocks of Rhode Island to the history of the Avalonian microcontinent. |
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| The most typical are current lineation and various worm tracks, particularly of the highly sinuous form Nereites. Apart from these trace fossils, wackes are usually sparsely fossiliferous. |
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| Area 2: This area is characterized by fossiliferous limestone deposited in a bank or shelf environment east of the Rainbow, Shekilie and Zama Basin regions. |
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| Ichnological aspect of fossiliferous nodules of the Sarka Formation. |
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| To the question why we do not find rich fossiliferous deposits belonging to these assumed earliest periods prior to the Cambrian system, I can give no satisfactory answer. |
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| A plinth of black fossiliferous limestone from Frosterley topped this structure, and atop this plinth was a white alabaster effigy of Robert I, painted and gilded. |
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| For example, the Burgess Shale is a thick exposure of dark, occasionally fossiliferous, shale exposed high in the Canadian Rockies near Burgess Pass. |
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