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Goat Hill Serpentine Barrens
State Line Serpentine Barrens is a tract of serpentine barrens in Pennsylvania and Maryland in the eastern United States. The protected area is actually an assemblage of six tracts owned by a combination of the Nature Conservancy, the State of Pennsylvania, two counties, a township, and private owners. The largest tract is Nottingham County Park in Chester County, which has also been deemed a National Natural Landmark. The second-largest is Goat Hill Serpentine Barrens, jointly owned by the Nature Conservancy and the Pennsylvania Forestry Department (as a unit of William Penn State Forest), and the third-largest, Chrome Serpentine Barrens, is jointly owned by Elk Township and the Nature Conservancy. Rock Springs Preserve in Lancaster County is managed by the Lancaster Conservancy. The site has been named an Outstanding Geologic Feature of Pennsylvania. In the 19th century, the Pennsylvania–Maryland serpentine barrens were mined for chromite and magnesite. Other serpentine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serpentine Aster
''Symphyotrichum depauperatum'' (formerly ''Aster depauperatus''), commonly known as serpentine aster or starved aster, is a rare species in the family Asteraceae adapted to serpentine barrens, an ecosystem with a high concentration of toxic metals in the soil. It has been found in Pennsylvania, Maryland, and on some diabase glades in North Carolina. It grows to and has white ray florets surrounding a center of yellow disk florets. Description ''Symphyotrichum depauperatum'' is a perennial, herbaceous plant that may reach up to tall, with 1–3 stems. The leaves are narrow and generally long. The plant produces numerous flower heads in branched arrays, each head with 7–14 white or, rarely, pink ray florets surrounding 7–17 yellow disk florets. File:Symphyotrichum depauperatum 50071438.jpg, A plant in flower File:Symphyotrichum depauperatum 67278234.jpg, Flowers File:Symphyotrichum depauperatum 619554.jpg, Growth habit Taxonomy Within the genus ''Symphyotrichum'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesite
Magnesite is a mineral with the chemical formula (magnesium carbonate). Iron, manganese, cobalt, and nickel may occur as admixtures, but only in small amounts. Occurrence Magnesite occurs as veins in and an alteration product of ultramafic rocks, serpentinite and other magnesium rich rock types in both contact and regional metamorphic terrains. These magnesites are often cryptocrystalline and contain silica in the form of opal or chert. Magnesite is also present within the regolith above ultramafic rocks as a secondary carbonate within soil and subsoil, where it is deposited as a consequence of dissolution of magnesium-bearing minerals by carbon dioxide in groundwaters. Isotopic structure: clumped isotope The recent advancement in the field of stable isotope geochemistry is the study of isotopic structure of minerals and molecules. This requires study of molecules with high resolutions looking at bonding scenario (how heavy isotopes are bonded to each other)- leading to kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Maryland
Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage servi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Delaware County, Pennsylvania
Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark (botany), bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like Scale (anatomy), scales and hair offer further protection from the elements and from predators, with some animals having features such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Chester County, Pennsylvania
Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage serving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Lancaster County, Pennsylvania
Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage servin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serpentine Ridge Nature Preserve
The Serpentine Ridge Nature Preserve is a 40 acres woodland in the North Shore of Staten Island between Howard Avenue at the top of the ridge and Van Duzer Street at the bottom of the hill. The Serpentine Ridge plays an important part in Staten Island's ecosystem and biodiversity and maintains significant geological features. The Serpentine Ridge is a steep terrain on the east shore of the island within the Grymes Hill and Silver Lake neighborhoods of Staten Island. The area is notable for its variety of ecosystems including wooded hillsides, glacial sinkholes, and bare serpentine rock. The area is part of Staten Island's Special Hillsides Preservation District. The district was established to preserve the hilly terrain and unique natural features of the region, by reducing hillside erosion, landslides, and excessive storm-water runoff. Most of its land remains in a natural state, thus the area is covered with native vegetation. The Serpentine Art and Nature Commons owns approximate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staten Island
Staten Island ( ) is a borough of New York City, coextensive with Richmond County, in the U.S. state of New York. Located in the city's southwest portion, the borough is separated from New Jersey by the Arthur Kill and the Kill Van Kull and from the rest of New York by New York Bay. With a population of 495,747 in the 2020 Census, Staten Island is the least populated borough but the third largest in land area at . A home to the Lenape indigenous people, the island was settled by Dutch colonists in the 17th century. It was one of the 12 original counties of New York state. Staten Island was consolidated with New York City in 1898. It was formally known as the Borough of Richmond until 1975, when its name was changed to Borough of Staten Island. Staten Island has sometimes been called "the forgotten borough" by inhabitants who feel neglected by the city government. The North Shore—especially the neighborhoods of St. George, Tompkinsville, Clifton, and Stapleton—i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soldiers Delight Barrens
Soldiers Delight Natural Environmental Area is a nature reserve near Owings Mills in western Baltimore County, Maryland, U.S. The site is designated both as a Maryland Wildland (1,526 acres) and as a Natural Environment Area (1,900 acres) and is part of the Maryland Wildlands Preservation System. The site's protected status is due to the presence of serpentine soil and over 39 rare, threatened, or endangered plant species along with rare insects, rocks and minerals. Amenities of hiking trails have been blazed at Soldier's Delight. While pets are permitted, equestrians and bicyclists are not, to protect the fragile terrain. A visitor center is open on Saturdays and irregularly during the rest of the week. Attractions there include environmental education programs and a scavenger hunt. Bowhunting is allowed from mid-November to the end of January with appropriate permits. History The early colonial records of Maryland describe the area as a hunting ground for Native Americans. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromite
Chromite is a crystalline mineral composed primarily of iron(II) oxide and chromium(III) oxide compounds. It can be represented by the chemical formula of FeCr2O4. It is an oxide mineral belonging to the spinel group. The element magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr2O4). A substitution of the element aluminium can also occur, leading to hercynite (FeAl2O4). Chromite today is mined particularly to make stainless steel through the production of ferrochrome (FeCr), which is an iron-chromium alloy. Chromite grains are commonly found in large mafic igneous intrusions such as the Bushveld in South Africa and India. Chromite is iron-black in color with a metallic luster, a dark brown streak and a hardness on the Mohs scale of 5.5. Properties Chromite minerals are mainly found in mafic-ultramafic igneous intrusions and are also sometimes found in metamorphic rocks. The chromite minerals occur in layered format ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serpentine Barrens
Serpentine soil is an uncommon soil type produced by weathered ultramafic rock such as peridotite and its metamorphic derivatives such as serpentinite. More precisely, serpentine soil contains minerals of the serpentine subgroup, especially antigorite, lizardite, and chrysotile or white asbestos, all of which are commonly found in ultramafic rocks. The term "serpentine" is commonly used to refer to both the soil type and the mineral group which forms its parent materials. Serpentine soils exhibit distinct chemical and physical properties and are generally regarded as poor soils for agriculture. The soil is often reddish, brown, or gray in color due to its high iron and low organic content. Geologically, areas with serpentine bedrock are characteristically steep, rocky, and vulnerable to erosion, which causes many serpentine soils to be rather shallow. The shallow soils and sparse vegetation lead to elevated soil temperatures and dry conditions. Due to their ultramafic origin, se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancaster County, Pennsylvania
Lancaster County (; Pennsylvania Dutch: Lengeschder Kaundi), sometimes nicknamed the Garden Spot of America or Pennsylvania Dutch Country, is a county in the Commonwealth of Pennsylvania. It is located in the south central part of Pennsylvania. As of the 2020 census, the population was 552,984. Its county seat is Lancaster. Lancaster County comprises the Lancaster, Pennsylvania metropolitan statistical area. Lancaster County is a tourist destination with its Amish community a major attraction. Contrary to popular belief, the word "Dutch" in "Pennsylvania Dutch" is not a mistranslation, but rather a corruption of the Pennsylvania German endonym ''Deitsch'', which means "Pennsylvania Dutch / German" or "German". Ultimately, the terms Deitsch, Dutch, Diets, and Deutsch are all cognates of the Proto-Germanic word meaning "popular" or "of the people". The continued use of "Dutch" instead of "German" was strengthened by the Pennsylvania Dutch in the 19th century as a way of distin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
