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I'm not a geologist but am fascinated by the geology I saw in Greenland. Rode O had these interesting basaltic columnar dykes that had formed when volcanic magma has extruded up through the ancient red sandstone conglomerates and had cooled into hard structures that survived the erosion of the soft sandstone around them. The one in the foreground had separated from the surrounding sandstone, while another one on the far right was still embedded in the sediments. Rodefjord, Scoresby Sund, East Greenland.
21/06/2020 www.allenfotowild.com
Knockan Crag (Scottish Gaelic: Creag a' Chnocain, "crag of the small hill") lies within the North West Highlands Geopark in the Assynt region of Scotland 21 kilometres (13 mi) north of Ullapool. During the nineteenth century Knockan Crag became the subject of much debate when geologists noted that the Moine schists at the top of the crag appeared to be older than the Cambrian and Ordovician rocks such as Durness limestone lower down. Disagreements over the processes that could have caused this to occur were referred to at the time as the "Highlands Controversy". The argument was primarily between Roderick Murchison and Archibald Geikie on the one hand and James Nicol and Charles Lapworth on the other. Murchison and Geikie believed the sequence was wrong and that the Moine schists must be the younger rocks. The controversy was finally resolved by the work of Ben Peach and John Horne whose 1907 paper on the subject remains a classic text. Peach and Horne demonstrated that the situation resulted from the action of a thrust fault - this being the first to be discovered anywhere in the world. The older rocks had been moved some 70 kilometres to the west over the top of the younger rocks due to tectonic action.
The crag is designated as a national nature reserve (NNR) due to its geological features and is owned and managed by NatureScot. There is a car park and interpretation centre that explains the geology of the area and gives background to the Highlands Controversy, along with three waymarked trails that take visitors to points of interest across the site. The site also hosts artworks such as 'The Globe' by Joe Smith and 'Pipeworm’ by Susheila Jamieson that were commissioned to highlight the inspiration that the landscape has had on artists and poets.[
Wow broadbench is home to some amazing geology 155 MILLION years worth of it , just an incredible place period
This is my 2nd time to this spot
Unlike the 1st time here ,this time I had more whitewater than you could shake stick at
There was a small few minutes where the light was stunning which I captured here but then it fell completely flat and totally lifeless
Have a good week everyone 👍
Looking the other way in the Geologist Cabin. Curt brought his mini-projector and we watched the movie Hundreds of Beavers. It's an odd movie, but fun.
Here's the preview of the movie:
youtu.be/m39iu2YW-oM?si=a6rFMM1r63adHenE
Geologist Cabin, Butte Valley
Death Valley National Park
Regarded by geologists as one of the most important meltwater channels in the British Isles from the last Ice Age, the Gwaun Valley or Cwm Gwaun in Welsh is a steep sided valley which runs through the heart of the Preseli Mountains towards the old port of Fishguard or Abergwaun, meaning, Mouth of the River Gwaun.
A visit to the Gwaun Valley could make you think you've traveled back in time, especially in the month of January when the locals still celebrate New Years Day or Hen Galan, on the 13th of January, which marks the old new year's day as dated by the old Julian Calendar, which operated before 1752. replaced by many others with the the Gregorian Calendar.
Even a visit to the local pub, the Dyffryn Arms locally known as "Bessie's Pub" is like taking a huge leap back in time, where if you ask for a pint of beer, you'll receive some of the finest locally brewed ale, served straight out of the barrel with a traditional jug.
A Geologist's playground. The Stac of Glencoul and the Glencoul Thrust Fault can be seen forming the backdrop to the sweeping Kylesku Bridge.
One of a series of shots taken during a short trip along the Geological Trail on the NW of Scotland (www.nwhgeopark.com).
Addendum: I see a Bighorn Sheep face in there, or the logo of the Autobots from Transformers...
This boulder has a lot to say, to those who can read the language. It sits on an eroding shell heap begun by indigenous clam diggers at least 2,500 years ago on the bank of the Essex River, according to the Essex County Greenbelt Association, which owns and manages the property: "People known as the Pawtucket or Agawam lived and farmed here prior to English colonization in the 1600s. They found everything they needed in the salt marsh, the river, and the woods."
Whether the boulder was placed here by glaciers or by humans is not specified.
Really nice table and four chairs at Geologist cabin. Cabin has been cleaned up and is looking good. Had lunch here, while in Butte Valley searching for Outlaw Cave - great view!
Geologists must love explaining how these wonderfully parallel layers of rock were pushed from horizontal to vertical over how many millions of years? A time-lapse video would be awesome - At what, a frame every several thousand years???
Anyways, these formations are on the north side of the Kjøllefjorden, to our right as we departed Kjøllefjord on the MS Nordkapp, around 1730 on June 12, 2019.
Looking at satellite and terrain maps at "visitnorway.com", I'm estimating the formations go from some 700 feet on the left to 900 on the right. See "Kvitnakken" on that map. These formations are nearly opposite across the fjord to the well- known "Finnkjerka", a structure that lloks like an old cathedral on that shore.
[NP1K 2554] Alt Tags: Nikon CoolPix P1000
I am a 'rock hound' and always check out the rocks wherever I am - but these La Jolla rocks were hard to decipher.
I have put up these shots [with enhanced color and contrast] to try to show the context of the agate-like rock. Can anyone tell if these rocks are sedimentary or metamorphic - or metamorphic inclusions in a sedimentary matrix?
I suppose I could try looking up the geologic history of SoCal...
A colleague geologist from Belgium, Alain Herbosch, holds a beautiful specimen of a local wild mushroom. Photo taken near lake Hornavan, Norrbotten County, Sweden.
Photo taken in September 1979 with an SLR camera on Kodachrome film and scanned with a Nikon Super Coolscan 5000 slide scanner.
This is above the Geologist Cabin on Manly Peak. Elevation 5066' - Striped Butte's summit is 4764'. From base to summit, Striped Butte is about 800'.
Perry Sandhills - Australia. According to geologists, the Perry Sandhills originated after an ice age (40,000 years ago) and are formed by wind erosion over thousands of years. Skeleton remains of giant mega-fauna (kangaroos, lions, emus and wombats) have been found there. Replicas of these animals are now on show at the Pioneer Museum in Wentworth. Aboriginal tribes used this area to camp and hunt. Evidence of this is still being uncovered as the sands drift.
view more of my work here:
www.flickrleech.net/user/ambientlight
a web exhibit of my work here:
... if geologists got paid enough to buy a house in Darmstadt.
You know what granite is, but what is Buntsandstein?
The "Buntsandstein" (or "Bunter", as the British call it), meaning colourful or variegated sandstone, is the first era of the Germanic Trias group, starting around 252 million years ago and lasting about 6 million years. During this era the Germanic basin in the supercontinent Pangaea was an arid, drain-less lowland, surrounded by highlands, from which the rare but extreme rainfalls carried masses of sediment that became the variegated sandstone.
The Buntsandstein follows the late Permian Zechstein, during which the originally ocean-covered region fell dry, leaving massive deposits of evaporites. At the end of the Buntsandstein, global ocean levels rose again, starting the brief (by geological standards) Muschelkalk ("shell (-including) limestone").
After this interlude followed the Keuper, which ended with the start of the Jurassic and the beginning break-up of Pangaea and is marked by large deposits of dolomite and claystone.
I think it's really fascinating how such a cycle of massive change can be undergone in just 50 million years, about 1% of the age of the Earth.
Camera: Zeiss Ikon Contax II (1936-42)
Lens: collapsible Carl Zeiss Jena Sonnar 1:2 f=5cm
Shanghai GP3 100 black&white negative film, exposed at ISO 50
LoRes lab scan
Geologists say that the Appalachian Mountain range here in Newfoundland once rivalled the magnificent Rockies on Canada's west coast. But over millions of years they have been worn down by erosion ... of which glaciation played a large part. But even though our mountains here on the west coast of the province can't compare to the Rockies, they are still pretty impressive ... in my opinion.
This was taken in the same area as the last photo I uploaded, but much nearer to the area that here in the province is known as Wreckhouse. If you live in Canada and have listened to The Weather Network, you have probably heard Wreckhouse mentioned at times. It is well known for its high winds. Tractor trailers, campers, and even trains (when we had them) have been blown over or off the tracks. The area has an interesting history. You can Google it or you can find a photo on my website that I uploaded some years ago.
The geologists' cabin is a stone structure near Striped Butte, reachable by a 20-mile 4WD road on the west side of Badwater playa, Warm Springs Canyon Road.
OK Mr. Geologist guy, let's hear an explanation for this little rock. The rock is attached to the underlying layer of sandstone - why it is two colors with a little racing stripe down the center is beyond me.
Glasgow, Scotland 2014.
Alan the Geologist.
The peak of the Cobbler, December 29th. The peak became shrouded in fog just before we reached the top I will have to return soon.
Disjunction
Geologists have a saying - rocks remember. Neil Armstrong
with Haida M10 Filter Holder + Haida ND 3.0 Drop In+ Haida Red Diamond Medium GND - 3 Stops (Haida Filter)
with Canon 5D Mark IV + Canon 16-35 F4ISL (Canon Portugal)
with Leofoto LN 364-C Tripod and LH-55 Ball Head
- You can fin the exclusive distributor for Spain and Portugal Leofoto España y Portugal here www.leofoto.es, Leofoto España y Portugal
With MiopsTrigger and X-Rite Photo & Video
@ Pico Ana Ferreira, Porto Santo, Madeira, Portugal
Duarte Sol Photography
If you are a geologist you can tell time by looking at the walls of the great canyons carved by ice, time and water over millions of years in the American southwest . Zion National Park is one of 5 amazing wonder in Utah. There is great hiking above and below the stone canyons. . You can see the canyon in a day but it is better to camp or lodge nearby so you can do several trips, hiking up the Virgin River or hiking up to weeping rocks or the dramatic but dizzy heights of Angels Landing. A grand place to enjoy but in summer you might need a reservation as parking gets tight.
PS: Tell Spotify, Alexa, Siri and Amazon Prime to play music by
JOHN WILLIAM HAMMOND - you will enjoy. (use full name)
Walks along a beach as a geologist can be both extremely interesting and confounding-- the bicep of Cape Cod, so to speak, is a re-worked glacial morraine, made up of sediment derived from bedrock to the north-- mostly that surrounding Boston. Pebbles, cobbles, and boulders of more resistant types of bedrock, namely, granite, are extremely common on these beaches. Whenever I walk a river or a beach, I can usually tell, with some accuracy, which bedrock unit a given pebble came from. Which is why it's extremely frustrating to me that I can't place this particular granite-- I don't believe I've seen it before. I've seen ones like it: nice pink microcline feldspar (rich in potassium!) is very, very common in the huge mass of granite underlying the eastern 1/3 of the state-- but to have them in nice euhedral crystals, with a little bit of alteration to what-looks-to-be-albitic feldspar along their rims? And the chalky white albitic (?) feldspar? The relative lack of quartz or dark mafic minerals? The pistachio green bits of epidote just hanging out as if they crytallized right out of the magma and weren't introduced later by hydrothermal alteration (although I have my doubts-- microcline doesn't get *this* pink-red without soaking in some juices). It looks a little bit like granites that are lumped into the catch-all unit of Dedham granite (used to describe pretty much all granite around Boston), but, well... I just don't know. The fun thing about geology, and science, is that there are always mysteries to solve. The bedrock geology of the southeastern 1/3 of Massachusetts is very poorly mapped-- many, many different granites all lumped together. I was hoping to eventually take a crack at these rocks amongst others, but, alas, no longer have that job-- it's unclear if anyone will be mapping that geology anytime soon-- it's something I've been wanting to see done, and I was hoping to be one of the people to do it.
I am a 'rock hound' and always check out the rocks wherever I am - but these La Jolla rocks were hard to decipher. I have put up these shots to try to show the context of the agate-like rock. Can anyone tell if these rocks are sedimentary or metamorphic - or metamorphic inclusions in a sedimentary matrix?
I suppose I could try looking up the geologic history of SoCal...
The view from the Geologists Cabin looking out toward the Panamint Range in Death Valley.
Image with my Hasselblad 500cm
The White-browed Bush Chat, also known as Stoliczka's Bushchat, is an Old World flycatcher in the genus Saxicola. The alternative name is after the discoverer, geologist and explorer Ferdinand Stoliczka. This was the only White-browed Bush Chat seen in the Lala Bustard Sanctuary, Gujarat, India.
Thanks for your visit… Any comment you make on my photograph is greatly appreciated and encouraging! But please do not use this image without permission.
The name 'Keyah Hozhoni' expresses, in the language of the Navajo people of southwestern Utah, what is one of the most beautiful places on earth. The Navajo's have lived here for centuries, enduring the harsh climate and dwelling in this rough terrain. In the early years, they suffered slave raids by the Spaniards and white Americans, and attacks by other Indian tribes. But through it all, they have survived.
The magnificent sandstone formations and geological monuments that give Monument Valley its name are the result of centuries and millennia of erosion and uplift. Red sandstone cliffs and spires are predominantly made of 'Cutler Formation' sandstone from the Permian period of around 160 million years ago. Volcanic action also created some of the formations.
The 'Cutler Formation' is the rock unit spread throughout the southwestern U.S. Named by field geologists Charles Whitman Cross (1854-1949) and Ernest Howe in 1905. Cross was one of the leading field geologists of his generation.
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Copyright for this photo belongs solely to EVAN READER, GREATEST PAKA PHOTOGRAPHY. Images may not be copied, downloaded, or used in any way without the express written permission of the photographer.
A geologist told me 40 years ago that Northern Kentucky is the landslide capital of the world. Clay and shale,,,add some water and the clay acts like grease between layers of shale..let the slippage begin.
The Lalbagh Rock has attracted geologists around the world. In 1916, Dr WF Smeeth of the Mysore Geological Department termed such rocks found in peninsular India as Peninsular Gneiss. The Rock is thought to be 3,000 million years old and has been the source for several research papers. It initially served as a quarry, but was later abandoned. In 1975, the government of India (GoI) declared the rock as a National Geological Monument. A plaque erected near the hillock says it’s preserved by the Govt. of India.
Ross Maxwell, who was an excellent geologist and the first Superintendent of Big Bend National Park, laid out some of the roads in the park. He knew where the interesting sites were and had already seen most of the vistas and he took full advantage of his knowledge when laying out this roads. In fact, this overlook is off of the Ross Maxwell Scenic Drive that traverses the western end of the Park and is named in his honor. Even though there it is just a drive-up stop, it is one of my not to be missed stops in the park.
This is called The Sotol Vista Overlook. It is named for the sotol plant that was used extensively by early natives throughout the region. The sotol grows in communities or “clumps” and covers much the slope of the west side of the overlook including the foreground of this photo.
The overlook is located on top of the Burro Mesa which is on the down-thrown side of the Burro Mesa fault. The fault splinters into several faults just to the right of this photograph. These splinter faults gradually lower the blocks into the Costolon Graben of the Sunken Block. Goat Mountain is on the far left. We will look at fabulous Goat Mountain a little later.
A little farther out and toward the middle is Kit Mountain looking like an inclined mesa. Both Goat Mountain and Kit Mountain are volcanic vents and may have been stratovolcanoes originally although they have been heavily altered by erosion.
Even further away is the up-thrown block of Cretaceous Limestone which was uplifted by the Terlingua fault and forms the western edge of the Costolon Graben and the Sunken Block. Santa Elena Canyon can be seen as a gap on this cliff face just above Kit Mountain.
MG_3449
Deep within Luray Caverns, when the idiotic, obnoxious people have finally moved on down the path... The sounds of the innards of our great planet will envelope you. Drips and drops, soothing rumbles, silence. Pure, sweet, golden silence. No one can touch you.
Interior of the Geologist Cabin and our cozy fire. It's tad small for four people on cots, but was just fine. We enjoyed the fire and watched a movie on a sheet we hung up. Curt brought his mini-projector. All the comforts of home!
That's Andrew on the left and Chris on the right.
Geologist Cabin, Butte Valley
Death Valley National Park
Photo by @Chris Toumanian
Here's the preview of the movie:
They like rock!...
However:
After a short hike we (and about a million very annoying and loud asian tourists) arrived at the Delicate Arch.
I was never a big fan of any kind of rock-formation, but that thing is a beauty. Geologist-porn at it's best!
Also, I really don't get why 99% (well, all except me) were sitting at the northern part of that area as the clouds looked way more epic facing the sun... good for me, got the picture without shouting at people standing in my frame.
Sony A7r | Sony 16-35mm F4 | 61s | F18 | ISO 100
Siccar Point, Scotland, UK
For geologists, this is one of the most famous and important locations in the world!
In 1788, James Hutton found proof here for his theory of the Earth being much much older than the 6000 years it was believed at the time.
Shown here (with my lovely field assistant David Pedley for scale :)) are two rock units, 65 million years apart in age, older greywacke with vertical beds/layers over 400 million years old, overlain by gently dipping/sloping red sandstones and breccias. The line between them is an ancient erosion surface, Hutton's Unconformity, that showed significant things can happen between rock layers, and that need significant time to do so!
I made a series of 360 movies here and took some strikes and dips - hopefully for a cool lesson plan for 1st year geology students!
You can see why geologists come from all over the country, and world, to study in Death Valley. The earth's geologic history is laid bare for all to see.
This is a more "normal" composition at this location. Might as well capture it once with the new camera for comparison, but having access to a different range of focal lengths opens up new compositions.
Another thing that I've noticed is that everything I capture with this lens seems so sharp. I.ve shot here with a set of Lori's "holy trinity" Nikon lenses on my Nikon D850, so pro-quality lenses (and price) on a 40-ish megapixel body. Not a bad setup. But the new glass, on a new mount that is intended to carry for decades forward, when camera resolution no doubt will continue to rise, already seems to produce better results.
I suspect that the new lenses are designed and manufactured with tighter specifications to be able to be used on future bodies and higher resolution sensors, and we're already seeing benefits today. It'll still be useful to have "faster" lenses on hands with f/2.8 or faster to be able to shoot at night (or wildlife at dusk), but for well lit daytime photography the utility of having a much greater range of focal lengths in hand, with high quality is hard to beat.
Donnelly Dome is what geologist call a "fleigberg." It is a mountain that was shaved off by a glacier. On top of the dome are large boulders left by the receding glacier. Geologist say that the dome should not even exist, that it should have been leveled along with the rest of the Delta River Valley.
The Dome rises almost 4000 feet and is an easy climb. One can find moose, caribou, grizzly bear, lynx and wolves around the dome. It is on military land, so a permit is required for climbing. Donnelly Dome is located about 20 miles south of Delta Junction Alaska and the Richardson Highway passes within a mile of it's base.
This photo was taken about 15 miles south of the Dome from an area that my wife and I love to frequent. The fall colors add to the beauty and mystique of the Dome.
Popped over to St Bee's on the Cumbrian coastline last night just before sunset. The tide was on it's way out and the rocky outcrops beneath the cliffs were wet with the sea water and glistening beautifully in the light; their range of colours and textures just screamed out to look at them a little bit closer somehow!
The underlying rock is red Permo-triassic sandstone about 200 Million years old, which is known geologically as "St. Bees New Red Sandstone". The St. Bees valley, which is much too big for the small "beck" that drains it, was formed by glacial action. The sandstone is never far from the surface and the smooth contours of the fields accurately reflect the underlying rock. On the seaward side, the rock has been eroded by wave action to produce the spectacular 80 metre high vertical cliffs stretching from the Seacote foreshore to Saltom Bay, 4 miles to the North. The dramatic sandstone cliffs of St. Bees Head are a heritage coast, and have one of the largest seabird colonies in England.