View allAll Photos Tagged METAMORPHIC
Pilot Mountain, a metamorphic quartzite monadnock rising to a peak 2,421 feet above sea level, is one of the most distinctive natural features in the U.S. state of NC. It's a remnant of the ancient chain of Sauratown Mountains.
No idea why it is here. It had to have been in running water for thousands of years to become this smooth. There is no topographic evidence of a river nearby in modern times. The South Platte is about 2 miles away and 1000 feet lower in a narrow canyon.
Båtsfjord, Norway.
An interbedded multicoloured series of violet and green mudstone, grey and pink sandstone, yellow
grey dolomite and grey limestone is extensively ex
posed in coastal cliffs in the western part of the Pers
fjorden syncline. Crinkled (?)algal lamination, desiccation cracks, 'birds eve' structures,
intraformational breccias, ripple cross-lamination,
(?)tepee structures, etc. may be observed. Shrinkage
cracks deformed by compaction, and sealed with calcite, are a widespread structure.
At this point, the metamorphic Amamoor beds have been intruded by granite and basalt, so all three geologies are seen here abutting. The last steep descent (pictured) of Taylors Yards Gully is over basalt. To the right the country rock is Amamoor beds whilst to the left and downstream the creek is eroding its way through granodiorite. The gravel beach reveals this diversity of rock types.
Most of the trees here are Lophostemon confertus (brush box) which is evidence of the past wildfires which have destroyed other species but induced the brush box to sucker back after the fire and then grow into mature trees. The tree on the right exhibits basal burn which indicates that a subsequent fire/s has been through the area, fires lit by lease-holding graziers of this state forest. This is a common management practice in this environment, though management practices are changing.
The middle of 3 tunnels cuts through Archean (Precambrian) age metamorphic and igneous rocks in Wind River Canyon between Shoshoni and Thermopolis, Wyoming, These rocks form the core of theOwl Creek Mountains which are dissected by the canyon. Most of the Precambrian rocks started out as sediments and basalts deposited in a trough on the margins of the Wyoming Craton during the Archean, about 2.9 bya. Metamorphism of these rocks occurred around 2.7 bya which resulted in black schists and amphibolites that was later intruded by white to pinkish gray quartz monzonite (Granite). A dike of the granite intrusive can be see on the opposite canyon wall in this photo. These rocks, some of the oldest in Wyoming, represent a time when Wyoming was a separate microcontinent (the Wyoming Craton) which existed 500 million years before the North American Continent formed.
The Tunnels in Wind River Canyon were dug when the road was first built through the Canyon in 1925. Before that time wagons then cars had to go over the top of the Owl Creek Mountains. In this nortward looking view, Tunnel #1 can be seen through tunnel #2. The railroad runs down the other side of the river. The railroad has 6 tunnels from the Dam through the Canyon.
Focus stack 45 images.
The Giant Swallowtail Chrysalis can resemble a small twig or branch, helping it blend into the plant to which it is attached. This form of camouflage helps protect the chrysalis from predators while it undergoes metamorphosis.
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© All Rights Reserved All Photos contained within this page are ©Raul Zaldivar 2023, unless otherwise noted, may not be copied, downloaded, blogged, distributed, or reproduced in any form without the express written consent of Raul Zaldivar.
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File Name: NZ6_5482
I think this was the first time I've seen Longs Peak from this close and from this orientation. You can see the prominent notch, and you can see streaks of dark, desert varnish coming down the face of the mountain.
A pegmatite intrusive cuts trough amphibolite and biotite schists in Wind River Canyon between Shoshoni and Thermopolis, Wyoming. These Archean (Precambrian) metamorphic and igneous rocks form the core of the Owl Creek Mountains which are dissected by the canyon. Most of the Precambrian rocks started out as sediments and basalts deposited in a trough on the margins of the Wyoming Craton during the Archean, about 2900 Ma. Metamorphism of these rocks occurred around 2750 Ma which resulted in black schists and amphibolites that was later intruded by white to pinkish gray quartz monzonite (Granite) and pegmatites (2730 Ma). A dike of the granite intrusive can be see on the opposite canyon wall in this photo. These rocks, some of the oldest in Wyoming, represent a time when Wyoming was a separate microcontinent (the Wyoming Craton) which existed 500 million years before the North American Continent formed. A combination of the Laramide uplift, the Boysen fault and the incision of the Wind River result in the exposure of these Archean rocks in the southern Wind River canyon.
References:
usgeologymorphology.com/wind-river-canyon-p5.html
Mueller, P. A., Peterman, Z. E., and Granath, J. W., 1985, A bimodal Archean volcanic series, Owl Creek Mountains, Wyoming Journal of Geology, v. 93, p. 701-712.
Condie, K. C., 1967, Petrologic reconnaissance of the Precambrian rocks in Wind River Canyon, central Owl Creek Mountains, Wyoming, Wyoming University Contributions to Geology, v. 6, no. 2, p. 123-129.
Stuckless, J.S., Miesch, A.T., Wenner, D.B., Hedge, C. E., Simmons, K.R., Nkomo, I.T., and Butt, K.A., 1986, Chemical and isotopic studies of granitic Archean rocks, Owl Creek Mountains, Wyoming, USGS Professional Paper 1388-A-C, 48p.
The Canadian Shield, also called the Laurentian Plateau, or Bouclier Canadien (French), is a large area of exposed Precambrian igneous and high-grade metamorphic rocks (geological shield) that forms the ancient geological core of the North American continent (North American or Laurentia craton). Composed of igneous rock resulting from its long volcanic history, the area is covered by a thin layer of soil (Wikipedia)
This is a view of a chunk of Precambrian layers along the Colorado River. Mostly there are Precambrian layers in this part of the River. Metamorphic Schist (including Vishnu and Brahma) and Precambrian Granite (including Zoroaster). The Precambrian layers are over 1billion years old. I believe this is Vishnu Schist with intrusive veins of Zoroaster Granite. Any clarification or correction will be appreciated.
[edit] Additional elucidation from Mike Beauregard:
showing metamorphosed bedded black shale with injections of younger pink granite and white quartz veins, all of which is folded. [end edit]
I went on a non-motorized Raft trip down the Colorado River through the Grand Canyon with Arizona Raft Adventures from May 16 through May 31. Four Oar rafts, a Dory, and a paddle raft.
AZRA has perfected Colorado River / Grand Canyon rafting. The guides were great, the food was great. Other than the weather, the experience was great.
I went with the idea that this was not a photo adventure. I was going to enjoy the experience and the ride. So I don't have photos of our put in at Lee's Ferry. But you know that you can't get that photo bug out of your system. I did not take my good cameras. This is a nice little Olympus TG-5. Everything takes a beating on a trip like this. It came out a little worse for wear but held up like a champion. On a trip like this you get sand in places you never knew you had places.
GRCA1919
P5230231 acd1-SharpenAI-Focus
From Wikipedia:
The geological type area for labradorite is Paul's Island near the town of Nain in Labrador, Canada. It has also been reported in Norway, Finland and various other locations worldwide.
Labradorite occurs in mafic igneous rocks and is the feldspar variety most common in basalt and gabbro. The uncommon anorthosite bodies are composed almost entirely of labradorite. It also is found in metamorphic amphibolites and as a detrital component of some sediments. Common mineral associates in igneous rocks include olivine, pyroxenes, amphiboles and magnetite.
Labradorite can display an iridescent optical effect (or schiller) known as labradorescence.
Taken with macro lens with extension tube.
Several of the butterflies showed signs of wear on their wings. That would indicate they have been hatched for some time. What I find interesting is that their color does not fade even when their wings are a little ragged. Montreal Botanical Garden, Quebec, Canada.
Focus stack 45 images.
The Giant Swallowtail Chrysalis can resemble a small twig or branch, helping it blend into the plant to which it is attached. This form of camouflage helps protect the chrysalis from predators while it undergoes metamorphosis.
------------------------------------------------------------------------------------------
© All Rights Reserved All Photos contained within this page are ©Raul Zaldivar 2023, unless otherwise noted, may not be copied, downloaded, blogged, distributed, or reproduced in any form without the express written consent of Raul Zaldivar.
Please do not post extensive group banners, advertising for groups, or any other pictures in the comments column. They impair the reading pleasure of the others.
Thank you!
File Name: NZ6_5610
Bow Fiddle Rock is a natural sea arch near Portknockie on the north-eastern coast of Scotland. It is so called because it resembles the tip of a fiddle bow. It is composed of Quartzite, a metamorphic rock which was originally quartz sandstone.
This rock is part of the Cullen Quartzite formation which is seen along the coast between Buckie and Cullen. The formation is some 2,400m thick and dates from the Neoproterozoic Era, 1,000 to 541 million years ago.
Metamorphic dyke in granite. Shot from a kayak. Deep Sea Bluff, Broughton Archipelago, British Columbia, Canada
🔸◾️ M E T A M O R P H I C ◾️🔸
📍 Kennack Sands 🌊☀️🌊
The dark and jagged serpentine rocks at Kennack Sands always seem to make me lean towards a dark & moody edit.
I chose the rock protruding above the horizon as a focal point. With a narrow aperture of ƒ/16, I used the rock to clip the rising sun for the small sun-star effect. A slow shutter speed captured the movement of the waves as they rushed in.
Canon 6D MkII | 24-105mm lens at 24mm | ƒ/16 | 0.6 sec | ISO 100 | Tripod | ND soft grad filter | Lightroom & Photoshop | Taken at Kennack Sands on 17-10-2021
🎄🎅 my "2022 CORNWALL CALENDAR" is now available to order from my website - www.hocking-photography.co.uk 🎅🎄
Copyright Andrew Hocking 2021
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Still on the shores of the sea-loch up in the North West, peering at yet another type of rock. Could this be Lewisian gneiss with seams of quartz, I wonder. Maybe someone who sees it might know. It was quite stunning, anyway.
(I posted the second to the left, top image as a single image earlier.)
Details of the metamorphic rock and encrusting orange lichen on the prominent blueschist 'knocker', about 3/4 mi in. Freshly washed outcrop from about an inch of rain a couple days ago. FOV is about 8 inches across. Per lichen expert Richard Droker, this is likely Polycauliona rosei.
Fall greenup in full swing in coastal SLO county! Lovely to see. I get sick of the BROWN.
I was pleasantly surprised by how well this came out, just about the time of the cloud-obscured sunset. Windy & mid-50s. I was underdressed! Quite a change from the mid and high 70s over the weekend. Summer to winter, literally overnight!
Can you see the Rock Face ? and it's body 😂
The rock face at Perran Beach is made of Devonian slates, which are part of a larger metamorphic aureole called killas, formed around the region's granite backbone
Moonstone is a 7529 foot (2,295 m) peak in the Granite Mountains of Wyoming. This granite knob is located in the Archean-age Sweetwater subprovince of the Wyoming Craton. These rocks represent a time when Wyoming was a separate microcontinent called the Wyoming Craton which existed 500 million years before the North American Continent formed. The Sweetwater subprovince has an east-west tectonic grain which is caused by a shear zone between the Sweetwater and Southern Accredited Terrane subprovinces along the southern edge of the Wyoming microcontinent.
Bow Fiddle Rock is a natural sea arch near Portknockie on the eastern coast of Scotland. It is so called because it resembles the tip of a fiddle bow. It is composed of Quartzite, a metamorphic rock which was originally quartz sandstone. This rock is part of the Cullen Quartzite formation which is seen along the coast between Buckie and Cullen and is some 2,400m thick and dates from the Neoproterozoic Era, 1,000 to 541 million years ago These rocks were folded when the ancient continents of Laurentia and Avalonia collided during the Caledonian orogeny. They later became exposed at the surface where sea and weather eroded the structure seen today The rock formation is both a tourist attraction and nesting place for sea birds including herring gulls, great black-backed gulls and lesser black-backed gulls. en.wikipedia.org/wiki/Bow_Fiddle_Rock
Portknockie (Scottish Gaelic: Port Chnocaidh, the hilly port) is a coastal village on the Moray Firth within Moray, Scotland. The village's name is written as Portknockies in the Old Parish Registers. This would suggest that the port's name referred to not one, but two rocky hills at the hythe - the Port Hill and the Greencastle. Nearby towns include Buckie, Findochty and Cullen. The village was founded in 1677 and it became a significant herring fishing port during the nineteenth century, although today only a handful of commercial inshore boats remain. The town was on the railway network, until Portknockie station closed in 1968. A popular site in Portknockie is Bow Fiddle Rock, a large rock about 50 feet high just off the coast. The quartzite structure has a large sea arch, which somewhat resembles the bow of a fiddle, making it an example of a natural arch. Small numbers of seabirds nest on the coastal cliffs. These include fulmar, black-legged kittiwake, common gull, razorbill and shag. Additionally common eider can be seen in and around the harbour and coves during the summer months. en.wikipedia.org/wiki/Portknockie
About 1,800 million years (Ma) ago, a sedimentary conglomerate with round pebbles was subducted into an oceanic trench, transforming it into a metamorphic phyllite. During this process, the pebbles were flattened out into pancakes less than 0.5cm think and over 20cm in diameter. Seen here in cross section, they appear as thin streaks with tapered ends. Some of the larger pebbles (dark reddish at the upper left corner and at right) are still lens shaped with tapered corners. Size approx 20 by 30 cm. Prescott Heights AZ, Center for Natural History
Morning Sunlight on Folded Sedimentary Rock and Stromatolites (Foreground), Near Libby and Troy, Montana
This block of hard Precambrian metamorphic rock rises 600 metres from the Buchan Gulf on northern Baffin Island, Canada.
A side canyon of Lundy Canyon in the Eastern Sierra Nevada, just east of Yosemite. Taken from a red metamorphic peak, reached on this occasion from the head of Warren Canyon. Most of the terrain is granite, except for the foreground and reddish rockslides on the nearer slopes, and a distant peak barely visible on the skyline left of center. The largest, intensely blue lake is Lake Oneida; just downstream of it are two large mine tailing piles from the mill of the May Lundy mine. The mine itself was most of the way up the steep talus slope to the left. A few pictures from a different hike to the area of the mine are in my Yosemite album. Some of the lakes are probably impounded by terminal glacial moraines. At one time, mine engineers built a wooden dam at the outflow of Lake Oneida, but it's too leaky to affect anything now.
Two Lights State Park is situated on 41 acres of headland on Cape Elizabeth, Maine and offers views of Casco Bay and the Atlantic Ocean. The park's ledges are made up of metamorphic rock that first accumulated as sediment at the bottom of the ocean during the Silurian period. These cliffs break apart from erosion and storms tumbling down onto the shoreline. Print Size 13x19 inches. HTT.
The most northerly tip of the Isle of Lewis, called the Butt of Lewis, is famous for its high winds and waves. The day I was there the winds were so strong I could barely stand and the waves were crashing on the cliffs and pillars, made of Precambrian metamorphic (Lewisian gneiss), some of the oldest rock in the world, around 3,000 million years old. Outer Hebrides, Scotland.
25/02/2023 www.allenfotowild.com
About 1,800 million years (Ma) ago, a sedimentary conglomerate with round pebbles was subducted into an oceanic trench, transforming it into a metamorphic phyllite. During this process, the pebbles were flattened out into lens shaped pancakes, sometimes less than 0.5cm think and over 20cm in diameter. Seen here in an outcropping, some of the larger pebbles are still lens shaped with tapered corners. Prescott Heights AZ, Center for Natural History
over 20 different variations of rocks
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Bow Fiddle Rock is a natural sea arch near Portknockie on the north-eastern coast of Scotland. It is so called because it resembles the tip of a fiddle bow. It is composed of Quartzite, a metamorphic rock which was originally quartz sandstone.
This rock is part of the Cullen Quartzite formation which is seen along the coast between Buckie and Cullen. The formation is some 2,400m thick and dates from the Neoproterozoic Era, 1,000 to 541 million years ago.
A discrete location on Tasmania's North West Coast finds 1400 million year old proterozoic rocks ripped apart by 8-12 million year old intrusive basalt.
Put them all in the Bass Strait washing machine. Pebble City
Nikon Z6, Nikkor Z 24-200/4-6,3, 77 secs at f/11, Breakthrough Photography 15 stop ND Filter.
Bow Fiddle Rock is a natural sea arch near Portknockie on the north-eastern coast of Scotland. It is so called because it resembles the tip of a fiddle bow. It is composed of Quartzite, a metamorphic rock which was originally quartz sandstone.
This rock is part of the Cullen Quartzite formation which is seen along the coast between Buckie and Cullen. The formation is some 2,400m thick and dates from the Neoproterozoic Era, 1,000 to 541 million years ago.
Migmatites are rocks that contain both metamorphic and igneous phases and are formed under high pressure and temperature. These conditions exist only at depths close to earth’s mantle. Typically, the light phase contains quartz, feldspar and muscovite with lower melting points ( igneous phase) and dark minerals such as amphibolite and biotite with higher melting points in the metamorphic, non-melted state. Put both phases together, put them in a mixer and the result is a rock face that looks like a toffee mix! The length of this about 10 meters. Taken from a small tour boat.
Pilot Mountain, a metamorphic quartzite monadnock rising to a peak 2,421 feet . It is a remnant of the ancient chain of Sauratown Mountains, NC. The Saura Native Americans, the region's earliest known inhabitants, called the mountain "Jomeokee", meaning "great guide❤️
ICM / ME on a gneiss outcrop, Vaseux Lake, BC. In other words, this image is of a small part of a rock face, modified only by intentional camera movement during four exposures which were blended in-camera, and then by adjustments in Lightroom. The banded Vaseux Lake gneiss, being a metamorphic granite, has lovely colours, some of which meet the eye at once, and others which are latent but which the camera can see and bring out.
Rocks of the proterozoic Rocky Cape Group on Tasmania's North West Coast.
Breakneck Rocks in the upper centre and Sisters Island out to sea.
iPhone 14 Pro Max, 9mm f/2.8 back camera, 18 secs at f/2.8 ISO 32. ReeExpose Long Exposure Camera App.
Kudumbigala rock, located in the north of Kumana national park, is a huge outcrop of metamorphic rock. Kumana or Yala East national park occupies the southern most part of Eastern Province bordering on Hambantota district in Southern Province.
Gneiss outcrops in a roadcut along the Beartooth highway near the Highway Maintenance Station close to Clay Butte. This exposure displays a good example of gneissic banding. The gneiss exposed here belongs to a igneous-metamorphic rock complex of Archean age which has been dated radiometrically at around than 2.6 billion years old. These rocks represent a time when Wyoming was a separate microcontinent called the Wyoming Craton which existed 500 million years before the North American Continent formed.
This landscape has developed on marine metamorphic beds that have been uplifted and folded. In the those phases many faults and joints have been created giving rise to strong lineaments in the landscape. Here greenstone, intruded granodiorite, phyllites, jasper and mudstone geologies are present.
The structures run north-south whereas the major valleys run west-east.
The variation in the colour of the forests on the ranges is a record of wildfire and recent control-burning history.
Pilot Mountain in North Carolina is a a metamorphic quartzite monadnock rising to a peak 2,421 feet.
Omvrianós peak 3,310.4 ft (1009 m), Greece. Outcrops of schists & similar metamorphic rocks are scattered throughout the mountain’s cliffs. Petrokerasa village is nearby.
Elijah, the Old Testament Prophet, is revered as St. Elias by Greek Orthodox church and celebrated on July 20th.
Multitudinous shrines of St. Elias are erected on almost all mountains’ peaks throughout Greece; they’re usually quite tiny, old and picturesque, lit only by small hanging oil-lamps and candles.