View allAll Photos Tagged quartzite
Quartzite in the Precambrian of South Dakota, USA.
Extensive outcrops of pinkish, Paleoproterozoic-aged quartzites are present at Falls Park along the Big Sioux River in the city of Sioux Falls, southeastern South Dakota, USA. The quartzites here have nicely water-worn, sculpted surfaces with good, fluvially abraded polish in places. These rocks are part of the Sioux Quartzite (Paleoproterozoic, 1.65-1.70 Ga). Despite being subjected to regional metamorphism, this unit’s original sedimentary features, such as horizontal stratification and ripple marks, are still preserved.
The Sioux Quartzite is a famous erosion-resistant unit in America’s midcontinent. It has formed a long-lived paleotopographic high since Precambrian times - the Sioux tectonic core. This high is part of a NE-SW trending series of paleotopographic highs & depressions known as the Transcontinental Arch, which extends from Arizona to Minnesota (see Carlson, 1999).
The Sioux Quartzite has been quarried in southeastern South Dakota and southwestern Minnesota. Material from these quarries is used as road gravel, sidewalk and paving gravel, and erosion control blocks.
Stratigraphy: Sioux Quartzite, upper Paleoproterozoic, 1.65-1.70 Ga
Locality: Falls Park, near Sioux Falls along the Big Sioux River in the town of Sioux Falls, southeastern South Dakota, USA
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Reference cited:
Carlson (1999) - Transcontinental Arch - a pattern formed by rejuvenation of local features across central North America. Tectonophysics 305: 225-233.
"The Cutting Wedge" – Christopher Lee, 1989, 488 East Valley Parkway and Hickory – A single tall wedge made of quartzite, laminated glass, and aluminum.
Looking up from the path around the huge pile of talus (large lumps of frost shattered rock) which form the summit of Blackrock. The top is at 3092 ft.
on quartzite, Wheeler Pk, NV
my lichen photos by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...
my photos arranged by subject, e.g. mountains - www.flickr.com/photos/29750062@N06/collections
Cross-bedded pebbly quartzite in the Precambrian of Wisconsin, USA.
The Baraboo Ranges of southern Wisconsin are dominated by a hard, erosion-resistant Precambrian metamorphic unit called the Baraboo Quartzite. These rocks were originally marine sandstones and have been subjected to metamorphism and structural folding. Original sedimentary structures are preserved, such as cross-bedding and ripple marks. Baraboo Quartzites vary in color from pinkish to dark reddish to grayish. During metamorphism, quartz overgrowths formed over the original quartz sand grains. Long-term, modern weathering can result in original sand grains being released.
This unit has economic significance - it has been quarried historically and in modern times. The quartzite is broken down into gravel-sized pieces for use as railroad ballast and erosion-control rip-rap.
The tilted layers shown above are cross-bedding, formed in a one-directional current by wind or water (in this case, water).
Stratigraphy: Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga
Locality: Tumbled Rocks Trail, northwestern margin of Devil's Lake, Devil's Lake State Park, northern part of the South Range of the Baraboo Ranges, southeast of the town of Baraboo, eastern Sauk County, southern Wisconsin, USA (43° 25' 34.34" North, 89° 44' 06.56" West)
Relief of Horemheb
Quartzite
Horemheb
was the last Pharaoh of the 18th Dynasty from either 1319 BC to late 1292 BC, or 1306 to late 1292 BC
Before he became pharaoh, Horemheb was the commander in chief of the army under the reigns of Tutankamun and Ay. After his accession to the throne, he reformed the state and it was under his reign that official action against the preceding Amarna rulers began.
Horemheb demolished monuments of Akhenaten, reusing their remains in his own building projects, and usurped monuments of Tutankhamun and Ay. Horemheb presumably remained childless since he appointed his vizier Paramesse as his successor, who would assume the throne as Ramesses I. ~ en.wikipedia.org/wiki/Horemheb
King Tut Exhibit at the Pacific Science Center
August 3, 2012
Quartzite from the Precambrian of Australia. (~10.0 centimeters across at its widest)
Quartzite is a crystalline-textured, quartzose rock. They form by intermediate- to high-grade metamorphism of quartzose sandstones or siltstones. The term "quartzite" has also been applied to very hard, very well-cemented quartzose sandstones that have not undergone metamorphism. Metamorphic quartzite is sometimes called "metaquartzite" to prevent confusion.
The quartzite shown above is a very well-cemented sandstone from the near-uppermost Precambrian of South Australia. This is a lithologic sample from the famous Ediacara Sandstone Member, from which many bizarre, soft-bodied fossils have been collected (e.g., Dickinsonia and Tribrachidium).
Stratigraphy: Ediacara Sandstone Member, Rawnsley Quartzite, upper Ediacaran, upper Neoproterozoic
Locality: loose piece from the southern side of Hookina Creek-cut gorge walls at Mayo Gorge (= day 5, locality 2 of Jago & Wang, 2006, South Australia 2006, XI International Conference of the Cambrian Stage Subdivision Working Group Field guide, pp. 28-29), southern Elder Range, just southeast of Mt. Little, just north of Mayo Hut, ~north of the town of Hawker, South Flinders Ranges, South Australian Outback, southern Australia (GPS: 31° 44.062' South latitude, 138° 24.320' East longitude)
Winged quartzite pectoral with face of the Olmec rain god. Olmec, 900 BC - 400 BC. Maya incised portrait of king with glyph inscription naming the Maya ruler. Maya, 100 BC - 200 AD. Southern Lowlands, Mexico. Dumbarton Oaks, Washington, DC, USA. Special Exhibit, Golden Kingdoms: Luxury and Legacy in the Ancient Americas. Metropolitan Museum of Art, New York, New York, USA. Copyright 2018, James A. Glazier.
Had one chance for a shot at dusk for the vendor was just reaching down to drop the tent flap and close up for the day. Somehow I hope a buyer will come along tomorrow and buy the whole "family"....
Seen in Quartzite, Arizona at the annual rock and gem show. This is one of many show venues in the area. Of course this venue is what I call the "See All Kinds of Crap from All Over the World" venue. At least that is what I told gwilmore and his son today as we stopped here for our one last chance to see wonders before we left for the day's outing. It was marvelous fun, and so much the better for the company!
Quartzite with red jasper pebbles in the Precambrian of Ontario, Canada.
Southeastern Canada's ~2.3 billion year old Lorrain Formation includes some beautiful rocks that rockhounds have nicknamed "puddingstone". This refers to whitish-gray quartzites having common pebbles of red jasper.
The Lorrain Formation is somewhat heterolithic. Published studies mention that the unit has arkoses, subarkoses, quartzites, and jasper-pebble conglomerates. The latter two lithologies are present at the glacially-eroded outcrop seen here. The quartzites were originally sandstones. They have been well cemented and somewhat metamorphosed into very hard rocks. The jasper-pebble conglomerates, or "puddingstones", include clasts of white quartz and reddish jaspilites.
Jaspilite is a type of BIF (banded iron formation). BIFs only formed on Earth during the Precambrian - most are Paleoproterozoic in age. They are the # 1 source of iron ore for the world's steel industry. Numerous specific types of BIFs are known. Jaspilite consists of alternating laters of red and silvery-gray, iron-rich minerals. The red layers are hematite or jasper (= hematitic chert). The silver-gray layers are usually rich in magnetite and/or specular hematite. Jaspilite BIFs outcrop in many areas around Lake Superior, for example in Michigan's Upper Peninsula, Minnesota, and Ontario.
During the Paleoproterozoic, BIFs were subaerially exposed as paleo-outcrops and eroded, producing BIF sediments, including many red jasper pebbles. These mixed with quartz-rich sediments.
Regional studies indicate that the Lorrain Formation was deposited in ancient shallow ocean, lake, delta, and shoreline environments.
Stratigraphy: Lorrain Formation, upper Cobalt Group, Huronian Supergroup, Paleoproterozoic, ~2.3 Ga
Locality: Ottertail Lake Northeast Roadcut - glacial knob on the eastern side of Rt. 638, northeast of Ottertail Lake & southeast of Rock Lake, north-northeast of the town of Bruce Mines, southern Ontario, southeastern Canada (46° 23' 30.59" North latitude, 83° 43’ 10.94" West longitude)
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Some info. synthesized from:
Hadley (1970) - Paleocurrents and origin of Huronian Lorrain Formation, Ontario and Quebec. American Association of Petroleum Geologists Bulletin 54: 850.
Flaggy muscovitic quartzite from the Precambrian of Wyoming, USA. (5.5 centimeters across at its widest)
Geologic unit: Elmers Rock Greenstone Belt, Archean, 2.54+ Ga
Locality: loose piece from small abandoned quarry (= locality of Harris, 2003, p. 9), ~0.5 miles north of Tunnel Road & west of Squaw Mountain & south-southeast of Government Peak, eastern flanks of the Laramie Range, far-eastern Albany County, west-southwest of Wheatland, southeastern Wyoming, USA (vicinity of 41° 55’ 00.40” North latitude, 105° 17’ 48.53” West longitude)
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Reference cited:
Harris (2003) - Decorative stones of southern Wyoming. Wyoming State Geological Survey Public Information Circular 42.
Innovate Stones | Taj Mahal quartzite countertops. #granite #countertops #innovatestones #remodeling #kitchen
Masi Quartzite - fuchsitic quartzite from the Silurian of Norway.
Quartzite (metaquartzite) is a quartzose, crystalline-textured, metamorphic rock. It forms by intermediate- to high-grade metamorphism of quartzose sandstones and siltstones. The coloration in greenish quartzite is often from fuchsite, a chromian-rich variety of muscovite mica. In the decorative stone shown above, the fuchsite occurs in discrete, convoluted bands.
Locality: attributed to a quarry at Gaskabeivarri, near Masi, Kautokeino Municipality, Finnmark, northern Norway
Men (43) on backcountry canoe trip in Northern Ontario Canada in late autumn with fall leaves and snow dusted trees and mountains.
2 gigantic quartzite statues guard the mortuary temple of Amenhotep III (18th dynasty) in the West Bank of present day Luxor. Today, there is little left of the temple other than the heavily damaged statues, which weigh approx. 700 tons each and stand 18m (60ft) high.
The Northern statue is of Amenhotep III with his mother, Mutemwiya.
The southern statue is of Amenhotep III with his wife, Tiy and one of his daughters.
The reference to Memnon is derived from the hero of the Trojan War. Memnon means "Ruler of the Dawn" and the name was given to the colossi because of the reported cry emitted from one of the colossi at dawn.
Ripple marks in the Stirling Quartzite. These features were created when sands were deposited on a shallow continental margin. The formation spans the late Proterozoic and the early Cambrian. It is about 560-590 million years old. Echo Canyon. Death Valley National Park. Inyo Co., Calif.
Quartzite (metaquartzite) is a quartzose, crystalline-textured, metamorphic rock. It forms by intermediate- to high-grade metamorphism of quartzose sandstones and siltstones.
Probably from the Delta region, Egypt.
26th Dynasty, around 590 BC.
Quartzite statue of Nakhthorheb, a high official of the reign of Psammetichus II.
Nakhthorheb was a high official during the reign of Psammetichus II (664-610 BC). This over life-size statue is one of a number of monuments of Nakhthorheb from various sites. It is reasonable to assume that it may also have come from northern Egypt, as texts on this object evoke the gods Osiris and Neith at Sais, in the Nile Delta.
The statue was probably set up in a temple to illustrate Nakhthorheb's piety, and it is one of a group of statues in which the gaze of the face is raised slightly, indicating adoration, or 'apotheosis', of the temple god. The muscles of the body have been very carefully modelled, indicating the forms in a strong yet subtle manner.
from: www.britishmuseum.org
Today we decided to go for a drive to California. Blythe, CA is on the CA/AZ border on I-10, about 130 miles west of where we live. We had not made that trek before, so it seemed like fun.
While Anne was in the bead store I decided to wander around Quartzite. This is a small little town about 15 miles from the CA border. However, during the winter, there are about 1.5 million people who bring their RVs, campers, tents, etc. and stay in the area. Glad I was here today.
During my wandering, I saw this little kid (dad was just to the left) playing on this little toy backhoe..
The tallgrass prairie of Southwest Minnesota is broken by outcrops of quartzite. In an area near Pipestone, Minnesota, embedded in the quartzite are veins of relatively soft layers of petrified clay. For centuries before the arrival of European Americans the reddish softer rock was quarried by local indigenous people to carve ceremonial pipes and other sacred objects. These object were traded with other tribal groups. As European American settlement expanded into the area, the Yankton Sioux secured free and unrestricted access to the quarry area through treaty. However, non tribal groups were digging in the area because many tribal people were forced to reservations. In 1937, Congress established Pipestone National Monument to protect the resource and provide traditional quarrying for native people.
Pipestone National Monument is on the National Register of Historic Place and is a National Historic Landmark.
Quartzite from the Precambrian of the Transcontinental Arch, USA. (6.9 centimeters across at its widest)
Metamorphic rocks result from intense alteration of any previously existing rocks by heat and/or pressure and/or chemical change. This can happen as a result of regional metamorphism (large-scale tectonic events, such as continental collision or subduction), burial metamorphism (super-deep burial), contact metamorphism (by the heat & chemicals from nearby magma or lava), hydrothermal metamorphism (by superheated groundwater), shear metamorphism (in or near a fault zone), or shock metamorphism (by an impact event). Other categories include thermal metamorphism, kinetic metamorphism, and nuclear metamorphism. Many metamorphic rocks have a foliated texture, but some are crystalline or glassy.
Quartzite is a common, crystalline-textured, intermediate- to high-grade metamorphic rock. It forms by metamorphism of quartzose sandstones or siltstones. Quartzite can be entirely composed of interlocking quartz crystals, or the original sand grains may still be visible. This rock is hard (H = 7), will not bubble in acid (unlike marble), and can be almost any color.
The term “quartzite” has been used in geology to refer to crystalline, quartzose metamorphic rocks and to hard, well-cemented quartzose sandstones that have not been subjected to metamorphism. It is difficult to not call hard, well-cemented sandstones “quartzite” - for example, the Clinch Quartzite in the Appalachian Mountains and the Eureka Quartzite of the Great Basin in western USA, but the Clinch and Eureka aren’t metamorphic rocks. The term "metaquartzite" has been used by some geologists to refer to crystalline-textured, quartzose rocks that have been metamorphosed. This implies that “quartzite” be restricted to well-cemented, non-metamorphosed sandstones. I don’t often see the term metaquartzite in the geologic literature.
The quartzite sample seen here is from the Precambrian-aged Sioux Quartzite, which outcrops in southeastern South Dakota and southwestern Minnesota. Despite being regionally metamorphed, the unit’s original sedimentary features, such as horizontal stratification, cross-bedding, and ripple marks, are still apparent in some outcrops.
The Sioux Quartzite is a erosion-resistant unit in a long-lived paleotopographic high called the Sioux tectonic core. This high has existed since Precambrian times and is part of a northeast-southwest trending series of paleotopographic highs & depressions known as the Transcontinental Arch, which extends from Arizona to Minnesota (see Carlson, 1999).
Stratigraphy: Sioux Quartzite, upper Paleoproterozoic, 1.65 to 1.70 Ga
Locality: undetermined quarry; collected from railroad ballast at Missouri Valley, Iowa, USA
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Reference cited:
Carlson (1999) - Transcontinental Arch - a pattern formed by rejuvenation of local features across central North America. Tectonophysics 305: 225-233.
Masi Quartzite - fuchsitic quartzite from the Silurian of Norway.
Quartzite (metaquartzite) is a quartzose, crystalline-textured, metamorphic rock. It forms by intermediate- to high-grade metamorphism of quartzose sandstones and siltstones. The coloration in greenish quartzite is often from fuchsite, a chromian-rich variety of muscovite mica. In the decorative stone shown above, the fuchsite occurs in discrete, convoluted bands.
Locality: attributed to a quarry at Gaskabeivarri, near Masi, Kautokeino Municipality, Finnmark, northern Norway
Quartzite head of Amenhotep III.
While I wait for the timed visit to start I take a few photos around and about.
A visit with the Friends of Braintree and Bocking Museum.
British Museum, Great Russell Street, London, WC1B 3DG
Tuesday, 9th April 2013, Bloomsbury, London.
Sandstone in the Silurian of Tennessee, USA. (geology hammer for scale)
The Clinch Formation (a.k.a. Tuscarora Quartzite, Clinch Sandstone, Tuscarora Sandstone; Clinch Quartzite, Tuscarora Formation) generally consists of hard, well-cemented, quartzose sandstones and some quartz-pebble conglomerates. Commonly seen sedimentary features include cross-bedding and burrows. The quartz grains in the Clinch appear to have been recycled, probably several times during the Precambrian and Early Paleozoic. These sediments were deposited near the end of the Taconic Orogeny. The beds themselves were structurally tilted during the Allegheny Orogeny, in the Late Paleozoic.
Stratigraphy: Clinch Formation, Llandoverian Series, lower Lower Silurian
Locality: roadcut on the northern side of Rt. 25E, across the road from Veterans Overlook, near the top of Clinch Mountain, northeastern Grainger County, northeastern Tennessee, USA (36° 20' 02.41" North latitude, 83° 23' 37.39" West longitude)
Quartzite from the Precambrian of the Transcontinental Arch, USA. (8.9 centimeters across at its widest)
Metamorphic rocks result from intense alteration of any previously existing rocks by heat and/or pressure and/or chemical change. This can happen as a result of regional metamorphism (large-scale tectonic events, such as continental collision or subduction), burial metamorphism (super-deep burial), contact metamorphism (by the heat & chemicals from nearby magma or lava), hydrothermal metamorphism (by superheated groundwater), shear metamorphism (in or near a fault zone), or shock metamorphism (by an impact event). Other categories include thermal metamorphism, kinetic metamorphism, and nuclear metamorphism. Many metamorphic rocks have a foliated texture, but some are crystalline or glassy.
Quartzite is a common, crystalline-textured, intermediate- to high-grade metamorphic rock. It forms by metamorphism of quartzose sandstones or siltstones. Quartzite can be entirely composed of interlocking quartz crystals, or the original sand grains may still be visible. This rock is hard (H = 7), will not bubble in acid (unlike marble), and can be almost any color.
The term “quartzite” has been used in geology to refer to crystalline, quartzose metamorphic rocks and to hard, well-cemented quartzose sandstones that have not been subjected to metamorphism. It is difficult to not call hard, well-cemented sandstones “quartzite” - for example, the Clinch Quartzite in the Appalachian Mountains and the Eureka Quartzite of the Great Basin in western USA, but the Clinch and Eureka aren’t metamorphic rocks. The term "metaquartzite" has been used by some geologists to refer to crystalline-textured, quartzose rocks that have been metamorphosed. This implies that “quartzite” be restricted to well-cemented, non-metamorphosed sandstones. I don’t often see the term metaquartzite in the geologic literature.
The quartzite sample seen here is from the Precambrian-aged Sioux Quartzite, which outcrops in southeastern South Dakota and southwestern Minnesota. Despite being regionally metamorphed, the unit’s original sedimentary features, such as horizontal stratification, cross-bedding, and ripple marks, are still apparent in some outcrops.
The Sioux Quartzite is a erosion-resistant unit in a long-lived paleotopographic high called the Sioux tectonic core. This high has existed since Precambrian times and is part of a northeast-southwest trending series of paleotopographic highs & depressions known as the Transcontinental Arch, which extends from Arizona to Minnesota (see Carlson, 1999).
Stratigraphy: Sioux Quartzite, upper Paleoproterozoic, 1.65 to 1.70 Ga
Locality: undetermined quarry; collected from railroad ballast at Missouri Valley, Iowa, USA
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Reference cited:
Carlson (1999) - Transcontinental Arch - a pattern formed by rejuvenation of local features across central North America. Tectonophysics 305: 225-233.