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Anastasia Formation
The Anastasia Formation is a geologic formation deposited in Florida during the Late Pleistocene epoch. Age Period : Quaternary Epoch: Pleistocene ~2.558 to 0.012 mya, calculates to a period of Faunal stage: Blancan through early Rancholabrean Location Anastasia Formation overlies the Atlantic Coastal Ridge along the coast from St. John's County southward to Palm Beach County and extends inland as far as 20 miles (32 kilometers) in St. Lucie and Martin County. Blowing Rocks Preserve in southern Martin County is an exposed outcropping along the beach.http://sofia.usgs.gov/publications/reports/mgs_lovejoy1998/ USGS Publications, Classic Exposures of the Anastasia Formation in Martin and Palm Beach Counties, Florida. A second outcropping is seen at Washington Oaks Gardens State Park in northern Flagler County, south of St. Augustine. History The Anastasia Formation was named by E. H. Sellards in 1912. Coquina obtained from this formation on Anastasia Island was used to c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hutchinson Island (Florida)
Hutchinson Island consists of two barrier islands on the coast of Martin, St. Lucie, and Indian River counties, in Florida. The two islands are separated by the Fort Pierce Inlet and are known as "North Hutchinson Island" and "South Hutchinson Island". North Hutchinson Island North Hutchinson Island is divided into two counties - Indian River County and St. Lucie County. Although it is not a separate island, the Indian River county portion of North Hutchinson Island that extends to the Sebastian Inlet sometimes is called "Orchid Island". South Hutchinson Island The Martin County portion of Hutchinson Island is unincorporated. The southern end, which sometimes is called "Stuart Beach", receives mail from Stuart Zip Code 34996, while the northern part receives its mail from Jensen Beach Zip Code 34957. Martin County has limited the building height on the island to four stories and thus has no high-rise or mid-rise buildings. The closest incorporated areas to the Martin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North American Land Mammal Age
The North American land mammal ages (NALMA) establishes a geologic timescale for North American fauna beginning during the Late Cretaceous and continuing through to the present. These periods are referred to as ages or intervals (or stages when referring to the rock strata of that age) and were established using geographic place names where fossil materials were obtained. System The North American land-mammal-age system was formalized in 1941 as a series of provincial land-mammal ages. The system was the standard for correlations in the terrestrial Cenozoic record of North America and was the source for similar time scales dealing with other continents. The system was revised into a formal chronostratigraphic system. This approach is nominally justified by international stratigraphic codes; it holds that first appearances of individual species in particular sections are the only valid basis for naming and defining the land-mammal ages. The basic unit of measure is the first/last bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coquina
Coquina () is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically sorted fragments of the shells of mollusks, trilobites, brachiopods, or other invertebrates. The term ''coquina'' comes from the Spanish word for " cockle" and "shellfish". For a sediment to be considered to be a coquina, the particles composing it should average or greater in size. Coquina can vary in hardness from poorly to moderately cemented. Incompletely consolidated and poorly cemented coquinas are considered grainstones in the Dunham classification system for carbonate sedimentary rocks. A well-cemented coquina is classified as a biosparite (fossiliferous limestone) according to the Folk classification of sedimentary rocks. Coquinas accumulate in high-energy marine and lacustrine environments where currents and waves result in the vigorous winnowing, abrasion, fracturing, and sorting of the shells that compose them. As a result, they typi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcite
Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on the Mohs scale of mineral hardness, based on Scratch hardness, scratch hardness comparison. Large calcite crystals are used in optical equipment, and limestone composed mostly of calcite has numerous uses. Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 °C, and vaterite is even less stable. Etymology Calcite is derived from the German ''Calcit'', a term from the 19th century that came from the Latin word for Lime (material), lime, ''calx'' (genitive calcis) with the suffix "-ite" used to name minerals. It is thus etymologically related to chalk. When applied by archaeology, archaeologists and stone trade pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia. Quartz is the mineral defining the val ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coquina (Anastasia Formation, Quaternary; St
Coquina () is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically sorted fragments of mollusks, trilobites, brachiopods, or other invertebrates. The term ''coquina'' comes from the Spanish word for " cockle" and "shellfish". For a sediment to be considered to be a coquina, the particles composing it should average or greater in size. Coquina can vary in hardness from poorly to moderately cemented. Incompletely consolidated and poorly cemented coquinas are considered grainstones in the Dunham classification system for carbonate sedimentary rocks. A well-cemented coquina is classified as a biosparite (fossiliferous limestone) according to the Folk classification of sedimentary rocks. Coquinas accumulate in high-energy marine and lacustrine environments where currents and waves result in the vigorous winnowing, abrasion, fracturing, and sorting of the shells that compose them. As a result, they typically exhibit w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surficial Aquifer
Surficial aquifers are shallow aquifers typically less than thick, but larger surficial aquifers of about have been mapped. They mostly consist of unconsolidated sand enclosed by layers of limestone, sandstone or clay and the water is commonly extracted for urban use. The aquifers are replenished by streams and from precipitation and can vary in volume considerably as the water table fluctuates. Being shallow, they are susceptible to contamination by fuel spills, industrial discharge, landfills, and saltwater. Parts of southeastern United States are dependent on surficial aquifers for their water supplies. Composition Surficial aquifers system consists mostly of beds of unconsolidated sand, cavity-riddled limestone and shells, sandstone, sand, and clay sand with minor clay or silt from the Pliocene to Holocene periods. In most cases the flow system is undivided, though in places, clay beds are sufficiently thick and continuous to divide the system into two or three aquifer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannon
A cannon is a large- caliber gun classified as a type of artillery, which usually launches a projectile using explosive chemical propellant. Gunpowder ("black powder") was the primary propellant before the invention of smokeless powder during the late 19th century. Cannons vary in gauge, effective range, mobility, rate of fire, angle of fire and firepower; different forms of cannon combine and balance these attributes in varying degrees, depending on their intended use on the battlefield. A cannon is a type of heavy artillery weapon. The word ''cannon'' is derived from several languages, in which the original definition can usually be translated as ''tube'', ''cane'', or ''reed''. In the modern era, the term ''cannon'' has fallen into decline, replaced by ''guns'' or ''artillery'', if not a more specific term such as howitzer or mortar, except for high-caliber automatic weapons firing bigger rounds than machine guns, called autocannons. The earliest known depict ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castillo De San Marcos
The Castillo de San Marcos (Spanish for "St. Mark's Castle") is the oldest masonry fort in the continental United States; it is located on the western shore of Matanzas Bay in the city of St. Augustine, Florida. It was designed by the Spanish engineer Ignacio Daza, with construction beginning in 1672, 107 years after the city's founding by Spanish Admiral and conquistador Pedro Menéndez de Avilés, when Florida was part of the Spanish Empire. The fort's construction was ordered by Governor Francisco de la Guerra y de la Vega after a raid by the English privateer Robert Searles in 1668 that destroyed much of St. Augustine and damaged the existing wooden fort. Work proceeded under the administration of Guerra's successor, Manuel de Cendoya in 1671, and the first '' coquina'' stones were laid in 1672. The construction of the core of the current fortress was completed in 1695, though it would undergo many alterations and renovations over the centuries. Though built in part by bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington Oaks Gardens State Park
Washington Oaks Gardens State Park is a Florida State Park located near Palm Coast, Florida, along A1A. The park is most famous for its formal gardens, but it also preserves the original habitat of a northeast Florida barrier island. Ecology Habitats preserved by the park include beach, coastal scrub, coastal hammock, and tidal marshes. Flora Vegetation includes southern live oaks (''Quercus virginiana''), magnolias, hickories (''Carya'' spp.), cabbage palmettos (''Sabal palmetto''), and saw palmettos (''Serenoa repens''). Plants that can be found in the gardens are roses, camellias, and azaleas, among others. Fauna Wildlife include sea turtles, Florida gopher tortoises, West Indian manatees, white-tailed deer, raccoons, bobcats, foxes, Virginia opossums, eastern gray squirrels, pileated woodpeckers, northern cardinals, bald eagles, peregrine falcons, and Florida scrub jays. History The park's land has a rich history. Native Americans found the area a productive hunti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blowing Rocks Preserve
Blowing Rocks Preserve is an environmental preserve on Jupiter Island in Hobe Sound Hobe Sound is an unincorporated area and census-designated place (CDP) in Martin County, Florida, United States, located along Florida's Treasure Coast. The population was 13,163 at the 2020 census, up from 11,521 in 2010. Geography Hobe Sound ..., Martin County, Florida, Martin County, Florida, United States, USA. It is owned by The Nature Conservancy. It contains the largest Anastasia Formation, Anastasia limestone outcropping on the U.S. state, state's east coast. Breaking waves spray plumes of water through erosion holes; the spray can reach heights of . This distinctive spectacle thus earned the limestone outcrop's name. The limestone outcropping also encompasses coquina shells, crustaceans, and sand. The preserve also features several coastal ecotones, including maritime hammocks, mangrove wetlands, and beach dunes. Common native species include Coccoloba uvifera, sea grapes, Bursera si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
