NationMaster - Encyclopedia: Stack (geology)

A stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast. Stacks are formed when part of a headland is eroded, leaving a small island. They also form when a natural arch collapses due to sub-aerial processes and gravity. A stack may collapse or be eroded leaving a stump. Stacks form most commonly on chalk cliffs, because of the medium resistance to erosion. Cliffs with weaker rock such as clay tend to slump and erode too quickly to form stacks, while harder rocks such as granite erode in different ways. Image File history File linksMetadata Download high-resolution version (2048x1536, 855 KB) Big Flowerpot on Flowerpot Island. ... Image File history File linksMetadata Download high-resolution version (2048x1536, 855 KB) Big Flowerpot on Flowerpot Island. ... Image File history File links Metadata No higher resolution available. ... Image File history File links Metadata No higher resolution available. ... Stack. ... Stack. ... This article includes a list of works cited but its sources remain unclear because it lacks in-text citations. ... A landform comprises a geomorphological unit. ... The bay at San SebastiÃ¡n, Spain A headland is an area of land adjacent to water on three sides. ... Severe soil erosion in a wheat field near Washington State University, USA. For erosion as an operation of Mathematical morphology, see Erosion (morphology) Erosion is displacement of solids (soil, mud, rock and other particles) by the agents of ocean currents, wind, water, or ice by downward or down-slope movement... Rainbow Bridge was formed by a meandering watercourse. ... Sub-aerial processes refer to processes taking place above ground level, with effects on objects on the ground. ... Gravity is a force of attraction that acts between bodies that have mass. ... A stump is the remains of an object that has been cut or broken, for example, when a tree has been felled. ... The Needles,situated on the Isle Of Wight, are part of the extensive Southern England Chalk Formation. ... Severe soil erosion in a wheat field near Washington State University, USA. For erosion as an operation of Mathematical morphology, see Erosion (morphology) Erosion is displacement of solids (soil, mud, rock and other particles) by the agents of ocean currents, wind, water, or ice by downward or down-slope movement... The Gay Head cliffs in Marthas Vineyard are made almost entirely of clay. ... The slump that destroyed Thistle, Utah, by creating an earthen dam that flooded the area Slump is a form of mass wasting event that occurs when loosely consolidated materials or rock layers move a short distance down a slope. ... Close-up of granite from Yosemite National Park, valley of the Merced River Quarrying granite for the Mormon Temple, Utah Territory. ...

Stacks are often important sites for nesting seabirds. Seabirds are birds that spend much of their lives, outside the breeding season at least, at sea. ...

Some stacks are famous for rock climbing. Climbers on Valkyrie at the Roaches. ...

Examples

]], California, USA Big Flowerpot, the larger of the two flowerpots on the island Flowerpot Island is an island in Georgian Bay, and is a part of the Fathom Five National Marine Park of Ontario, Canada. ... Ipperwash Beach, Lake Huron. ... Haystack Rock with The Needles Haystack Rock is a 235-foot tall monolith (or sea stack) on the Oregon coast in the northwestern United States, the third-tallest such structure in the world. ... Looking northwest up the beach. ... Official language(s) (none)[1] Capital Salem Largest city Portland Area Ranked 9th - Total 98,466 sq mi (255,026 kmÂ²) - Width 260 miles (420 km) - Length 360 miles (580 km) - % water 2. ... Stunning Goat Rock Beach and its companion, Blind Beach, are beaches in or near the town of Jenner, California. ... Official language(s) English Capital Sacramento Largest city Los Angeles Area Ranked 3rd - Total 158,302 sq mi (410,000 kmÂ²) - Width 250 miles (400 km) - Length 770 miles (1,240 km) - % water 4. ...

Categories: Stacks | Coastal geography Old Harry Rocks peak A stack at Old Harry rocks Old Harry Rocks at Handfast Point are a small but characteristic set of coastal landforms off Ballard Down at the eastern end of the Jurassic Coast world heritage site near Swanage in Dorset, England. ... Dorset (pronounced DOR-sit or [dÉ”.sÉ™t], and sometimes in the past called Dorsetshire) is a county in the south-west of England, on the English Channel coast. ... Motto (French) God and my right Anthem No official anthem - the United Kingdom anthem God Save the Queen is commonly used England() â€“ on the European continent() â€“ in the United Kingdom() Capital (and largest city) London (de facto) Official languages English (de facto)1 Unified - by Athelstan 927 AD Area - Total... The Needles from the cliffs inshore The Needles is a row of distinctive stacks of chalk that rise out of the sea off the western extremity of the Isle of Wight, England, close to Alum Bay. ... The Isle of Wight is an English island and county, off the southern English coast, to the south of the county of Hampshire, between the Solent and the English Channel. ... Am Buachaille Am Buachaille is a sea stack, or vertical rock formation, near Sandwood Bay in the Scottish county of Sutherland at grid reference NC206655. ... Sutherland (Cataibh in Gaelic) is a committee area of the Highland Council, Scotland, a registration county, and a lieutenancy area. ... This article is about the country. ... The Old Man of Hoy, seen from the south The Old Man of Hoy is a 137 metre (450 ft) sea stack of red sandstone perched on a plinth of igneous basalt, close to Rackwick Bay on the west coast of the island of Hoy, in the Orkney Islands, Scotland. ... Sutherland (Cataibh in Gaelic) is a committee area of the Highland Council, Scotland, a registration county, and a lieutenancy area. ... This article is about the country. ... The Twelve Apostles are a collection of natural limestone stacks standing just off shore in the Port Campbell National Park, on the Great Ocean Road in Victoria, Australia. ... The Great Ocean Road (known as the Surfcoast Highway between Geelong and Torquay) which stretches along the South Eastern coast of Australia between the Victorian cities of Geelong and Warrnambool is the worlds biggest war memorial. ... Motto: Peace and Prosperity Other Australian states and territories Capital Melbourne Governor HE Mr John Landy Premier Steve Bracks (ALP) Area 237,629 km² (6th) - Land 227,416 km² - Water 10,213 km² (4. ... PercÃ© Rock PercÃ© Rock (French rocher PercÃ©, pierced rock) is one of the largest and most spectacular natural arches in the world. ... PercÃ© is a small village on the tip of the GaspÃ© peninsula in Quebec. ... Motto: Je me souviens (French: I remember) Capital Quebec City Largest city Montreal Official languages French Government - Lieutenant-Governor Pierre Duchesne - Premier Jean Charest (PLQ) Federal representation in Canadian Parliament - House seats 75 - Senate seats 24 Confederation July 1, 1867 (1st) Area Ranked 2nd - Total 1,542,056 kmÂ² (595... Out of view, a staircase affords access so that visitors can hike down from the cliffs into the bay during low tide. ... Hopewell Cape is a village in southeastern New Brunswick at the head of Shepody Bay and the mouth of the Petitcodiac River. ... Motto: Spem reduxit (Hope restored) Capital Fredericton Largest city Saint John Official languages English, French (the only constitutionally bilingual province in the country) Government - Lieutenant-Governor HermÃ©nÃ©gilde Chiasson - Premier Shawn Graham (Liberal) Federal representation in Canadian Parliament - House seats 10 - Senate seats 10 Confederation July 1, 1867 (1st... High Island or Leung Shuen Wan (ç³§èˆ¹ç£æ´²) is an island in the southeast of Sai Kung Peninsula, Hong Kong. ... Cliff and natural arch in Ã‰tretat Ã‰tretat is a commune of the Seine-Maritime dÃ©partement in France. ... Seine-Maritime is a French département in Normandy. ... For the landscape in Norway, see Helgeland. ... Image File history File links Commons-logo. ...