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List Of Fossiliferous Stratigraphic Units In Massachusetts
This article contains a list of fossil-bearing stratigraphic units in the state of Massachusetts, U.S. Sites See also * Paleontology in Massachusetts The location of the state of Massachusetts Paleontology in Massachusetts refers to paleontological research occurring within or conducted by people from the U.S. state of Massachusetts. The fossil record of Massachusetts is very similar to that o ... References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Massachusetts Massachusetts Stratigraphic units Stratigraphy of Massachusetts Massachusetts geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratigraphic Units
A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, paleontologic features (facies) that characterize it. Units must be ''mappable'' and ''distinct'' from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as "when the sandstone component exceeds 75%". Lithostratigraphic units Sequences of sedimentary rock, sedimentary and volcanic rocks are subdivided the basis of their shared or associated lithology. Formally identified lithostratigraphic units are structured in a hierarchy of lithostratigraphic rank, higher rank units generally comprising two or more units of lower rank. Going from smaller to larger in rank, the main lithostratigraphic ranks are Bed, Member, Formation, Group and Supergroup. Formal names of lithostratigraph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts
Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut [Massachusett writing systems, məhswatʃəwiːsət],'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England region of the Northeastern United States. It borders on the Atlantic Ocean and Gulf of Maine to the east, Connecticut and Rhode Island to the south, New Hampshire and Vermont to the north, and New York (state), New York to the west. The state's capital and List of municipalities in Massachusetts, most populous city, as well as its cultural and financial center, is Boston. Massachusetts is also home to the urban area, urban core of Greater Boston, the largest metropolitan area in New England and a region profoundly influential upon American History of the United States, history, academia, and the Economy of the United States, research economy. Originally dependent on agriculture, fishing, and trade. Massachusetts was transformed into a manuf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agawam Group
The Agawam Group is a geologic group in Connecticut. It preserves fossils dating back to the Jurassic period. See also * List of fossiliferous stratigraphic units in Connecticut This article contains a list of fossil-bearing stratigraphic units in the state of Connecticut, U.S. Sites See also * Paleontology in Connecticut References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Connecticut Connecticut ... References * Geologic groups of Connecticut {{connecticut-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portland Formation
The Portland Formation is a geological formation in Connecticut and Massachusetts in the northeastern United States.Portland Formation - It dates back to the period.Weishampel et al., 2004, pp.530–532 The formation consists mainly of laid down by a series of lakes (in the older half of the formation) and the floodplain of a river (in the younger half). The sedimentary rock layers representing the ent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic, Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic magmatic province, Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread Anoxic event, oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar, Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turners Falls Formation
The Turners Falls Formation or Turners Falls Sandstone is an Early Jurassic geological formation in Massachusetts. Various reptile tracks and footprints are known from this strata. These include '' Antipus flexiloquus'', which has been interpreted as belonging to a small quadrupedal reptile or a pterosaur, though it is most likely a crocodylomorph. The formation is thought to represent the distal zones of three alluvial fans flowing west into a semiarid rift valley formed by a Mesozoic graben. These deposits represent the first infilling of the lowland that would one day become the Connecticut River Valley. In addition to trace fossils, the Turners Falls Formation bears some of the most well-preserved specimens of armored mud balls in the world. See also * List of pterosaur-bearing stratigraphic units * Portland Formation The Portland Formation is a geological formation in Connecticut and Massachusetts in the northeastern United States. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chamberlain's Brook Formation
The Chamberlain's Brook Formation is a thin but distinctive geologic formation of dark red calcareous mudstonesNormore, L. S. 2012: GEOLOGY OF THE RANDOM ISLAND MAP AREA (Nts 2C/04), Newfoundland. Current Research (2012) Newfoundland and Labrador Department of Natural Resources Geological Survey Report 12-:121–145. that crops out from Rhode Island to Massachusetts and, Nova Scotia, New Brunswick and Newfoundland. It preserves fossils, including trilobites, dating back to the lower mid-Cambrian period. Its lowermost member is the Braintree Member (lowest Middle Cambrian) and the uppermost member is the Fossil Brook Member. See also * List of fossiliferous stratigraphic units in Massachusetts * Paleontology in Massachusetts The location of the state of Massachusetts Paleontology in Massachusetts refers to paleontological research occurring within or conducted by people from the U.S. state of Massachusetts. The fossil record of Massachusetts is very similar to that o ... Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambrian
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million years ago (mya) to the beginning of the Ordovician Period mya. Its subdivisions, and its base, are somewhat in flux. The period was established as "Cambrian series" by Adam Sedgwick, who named it after Cambria, the Latin name for 'Cymru' (Wales), where Britain's Cambrian rocks are best exposed. Sedgwick identified the layer as part of his task, along with Roderick Murchison, to subdivide the large "Transition Series", although the two geologists disagreed for a while on the appropriate categorization. The Cambrian is unique in its unusually high proportion of sedimentary deposits, sites of exceptional preservation where "soft" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meriden Group
The Meriden Group is a geologic group, part of the Newark Supergroup, in Connecticut. It preserves fossils dating back to the Jurassic period. The group consists of the East Berlin Formation, Holyoke Basalt, Shuttle Meadow Formation, and Talcott Basalt. See also * List of fossiliferous stratigraphic units in Connecticut This article contains a list of fossil-bearing stratigraphic units in the state of Connecticut, U.S. Sites See also * Paleontology in Connecticut References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Connecticut Connecticut ... References * Geologic groups of Connecticut {{connecticut-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Berlin
East Berlin was the ''de facto'' capital city of East Germany from 1949 to 1990. Formally, it was the Allied occupation zones in Germany, Soviet sector of Berlin, established in 1945. The American, British, and French sectors were known as West Berlin. From 13 August 1961 until 9 November 1989, East Berlin was separated from West Berlin by the Berlin Wall. The Western Allied powers did not recognize East Berlin as the GDR's capital, nor the GDR's authority to govern East Berlin. On 3 October 1990, the day Germany was officially German reunification, reunified, East and West Berlin formally reunited as the city of Berlin. Overview With the London Protocol (1944), London Protocol of 1944 signed on 12 September 1944, the United States, the United Kingdom, and the Soviet Union decided to divide Germany into three occupation zones and to establish a special area of Berlin, which was occupied by the three Allied Forces together. In May 1945, the Soviet Union installed a city gove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Toby Formation
The Mount Toby Formation is a geologic formation in Massachusetts. It preserves fossils dating back to the Jurassic period. See also * List of fossiliferous stratigraphic units in Massachusetts * Paleontology in Massachusetts The location of the state of Massachusetts Paleontology in Massachusetts refers to paleontological research occurring within or conducted by people from the U.S. state of Massachusetts. The fossil record of Massachusetts is very similar to that o ... References * Jurassic Massachusetts {{Massachusetts-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weymouth Formation
The Weymouth Formation is a geologic formation in Massachusetts. It preserves fossils dating back to the Cambrian period. It was originally named for the Cambrian strata in the “ Boston Basin” by Amadeus Grabau and Henry T. Burr, at Nahant and Mill Cove. Ed Landing correlated the Hoppin Formation with the Weymouth Formation and thus abandoned use of that name. See also * List of fossiliferous stratigraphic units in Massachusetts * Paleontology in Massachusetts The location of the state of Massachusetts Paleontology in Massachusetts refers to paleontological research occurring within or conducted by people from the U.S. state of Massachusetts. The fossil record of Massachusetts is very similar to that o ... References * Cambrian Massachusetts Cambrian southern paleotemperate deposits Cambrian south paleopolar deposits {{Massachusetts-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
