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Trexler Nature Preserve
The Trexler Nature Preserve is an 1,108 acre county park owned and maintained by Lehigh County in the Lehigh Valley region of Pennsylvania.County of Lehigh, Dept. of General Services, "Trexler-Lehigh Game Preserve Master Plan" (Allentown, PA, May 2006), 1–1. The preserve is situated in Lowhill Township and North Whitehall Township and the land that comprises the preserve was originally purchased between 1901 and 1911 by local industrialist General Harry Clay Trexler.County of Lehigh, Dept. of General Services, "Trexler-Lehigh Game Preserve Master Plan" (Allentown, PA, May 2006), 1–2. It was originally Trexler's desire to stock the preserve with big game animals such as bison, elk, and deer with the express goal of saving the North American Bison. When Trexler died in 1933, the preserve, by will, passed to the care of the County of Lehigh. Lehigh County assumed title in 1935 and has been in control of the site ever since.County of Lehigh, Dept. of General Services, "Trex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvania
Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest, Ohio to its west, Lake Erie and the Canadian province of Ontario to its northwest, New York to its north, and the Delaware River and New Jersey to its east. Pennsylvania is the fifth-most populous state in the nation with over 13 million residents as of 2020. It is the 33rd-largest state by area and ranks ninth among all states in population density. The southeastern Delaware Valley metropolitan area comprises and surrounds Philadelphia, the state's largest and nation's sixth most populous city. Another 2.37 million reside in Greater Pittsburgh in the southwest, centered around Pittsburgh, the state's second-largest and Western Pennsylvania's largest city. The state's su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Easton, Pennsylvania
Easton is a city in, and the county seat of, Northampton County, Pennsylvania, United States. The city's population was 28,127 as of the 2020 United States census, 2020 census. Easton is located at the confluence of the Lehigh River, a river that joins the Delaware River in Easton and serves as the city's eastern geographic boundary with Phillipsburg, New Jersey. Easton is the easternmost city in the Lehigh Valley, a region of that is Pennsylvania's third largest Metropolitan statistical area, metropolitan region with 861,889 residents as of the 2020 United States census, U.S. 2020 census. Of the Valley's three major cities, Allentown, Pennsylvania, Allentown, Bethlehem, Pennsylvania, Bethlehem, and Easton, Easton is the smallest with approximately one-fourth the population of Allentown, the Valley's largest city. The greater Easton area includes the city of Easton, three townships (Forks Township, Northampton County, Pennsylvania, Forks, Palmer Township, Northampton County, Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trexler River2 , a census-designated place in Lehigh County
{{disambiguation, geo ...
Trexler may refer to: *Trexler (surname) * Trexler, Berks County, Pennsylvania, an unincorporated community in Albany Township *Trexler Nature Preserve, in Lehigh County, Pennsylvania See also *Trexlertown, Pennsylvania Trexlertown is an unincorporated community and census-designated place (CDP) in Upper Macungie Township in Lehigh County, Pennsylvania. As of the 2020 census, the population was 2,382. It is part of the Lehigh Valley, which had a population of 86 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trexler Riverford , a census-designated place in Lehigh County
{{disambiguation, geo ...
Trexler may refer to: *Trexler (surname) * Trexler, Berks County, Pennsylvania, an unincorporated community in Albany Township *Trexler Nature Preserve, in Lehigh County, Pennsylvania See also *Trexlertown, Pennsylvania Trexlertown is an unincorporated community and census-designated place (CDP) in Upper Macungie Township in Lehigh County, Pennsylvania. As of the 2020 census, the population was 2,382. It is part of the Lehigh Valley, which had a population of 86 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbidite
A turbidite is the geologic deposit of a turbidity current, which is a type of amalgamation of fluidal and sediment gravity flow responsible for distributing vast amounts of clastic sediment into the deep ocean. Sequencing Turbidites were first properly described by Arnold H. Bouma (1962), who studied deepwater sediments and recognized particular "fining-up intervals" within deep water, fine-grained shales, which were anomalous because they started at pebble conglomerates and terminated in shales. This was anomalous because within the deep ocean it had historically been assumed that there was no mechanism by which tractional flow could carry and deposit coarse-grained sediments into the abyssal depths. Bouma cycles begin with an erosional contact of a coarse lower bed of pebble to granule conglomerate in a sandy matrix, and grade up through coarse then medium plane parallel sandstone; through cross-bedded sandstone; rippled cross-bedded sand/silty sand, and finally lami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siltstone
Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, pp.381-382 Although its permeability and porosity is relatively low, siltstone is sometimes a tight gas reservoir rock, an unconventional reservoir for natural gas that requires hydraulic fracturing for economic gas production. Siltstone was prized in ancient Egypt for manufacturing statuary and cosmetic palettes. The siltstone quarried at Wadi Hammamat was a hard, fine-grained siltstone that resisted flaking and was almost ideal for such uses. Description There is not complete agreement on the definition of siltstone. One definition is that siltstone is mudrock ( clastic sedimentary rock containing at least 50% clay and silt) in which at least 2/3 of the clay and silt fraction is composed of silt-sized particles. Silt is defined a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers ( laminae) less than one centimeter in thickness. This property is called '' fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the more narrow sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks into thin layers, often splintery and usually parallel to the otherwise indistinguishable beddin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jordan Creek (Pennsylvania)
Jordan Creek (Pennsylvania Dutch: Hollenbach) is a tributary of Little Lehigh Creek in Lehigh County, Pennsylvania.Gertler, Edward. ''Keystone Canoeing'', Seneca Press, 2004. Jordan Creek arises from a natural spring on Blue Mountain. The spring is located downhill from the Bake Oven Knob shelter on the Appalachian Trail in Heidelberg Township in Lehigh County. The water course then flows intermittently downhill past Mountain Road, carrying further south through Heidelberg Township and passing through the Trexler Nature Preserve in Schnecksville. Jordan Creek joins Little Lehigh Creek in Allentown before soon flowing into the Lehigh River. It drains an area of . Jordan Creek is one several Lehigh Valley locations, along with Bethlehem, Egypt, and Emmaus, whose name was inspired by locations referenced in the Bible. Tributaries *Elk Ridge Run *Haasadahl Creek *Hegel's Run *Macintosh Run *Mill Creek *Schantz Valley Creek *Switzer Creek *Thicket Run See also *List of rivers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Mountain (Pennsylvania)
Blue Mountain, Blue Mountain Ridge, or the Blue Mountains of Pennsylvania, is a ridge of the Appalachian Mountains in eastern Pennsylvania. Forming the southern and eastern edge of the Ridge-and-Valley Appalachians physiographic province in Pennsylvania, Blue Mountain extends from the Delaware Water Gap on the New Jersey border in the east to Big Gap in Franklin County in south-central Pennsylvania at its southwestern end. Views of Blue Mountain dominate the southern tier of most eastern and central Pennsylvanian counties, providing an ever-visible backdrop cutting across the northern or western horizon. Most transport corridors and road beds piercing the barrier necessarily pass through either large water gaps (west to east: the Susquehanna, Schuylkill, Lehigh and Delaware River valleys) or wind gaps, low gaps in the ridge caused by ancient watercourses. The barrier ridge forms a distinct boundary between a number of Pennsylvania's geographical and cultural regions. To the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taconic Orogeny
The Taconic orogeny was a mountain building period that ended 440 million years ago and affected most of modern-day New England. A great mountain chain formed from eastern Canada down through what is now the Piedmont of the East coast of the United States. As the mountain chain eroded in the Silurian and Devonian periods, sediments from the mountain chain spread throughout the present-day Appalachians and midcontinental North America. New England and Canada Beginning in Cambrian time, about 550 million years ago, the Iapetus Ocean began to close. The weight of accumulating sediments, in addition to compressional forces in the crust, forced the eastern edge of the North American continent to fold gradually downward. In this manner, shallow-water carbonate deposition that had persisted on the continental shelf margin through Late Cambrian into Early Ordovician time, gave way to fine-grained clastic deposition and deeper water conditions during the Middle Ordovician. In this period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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