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Geological formation details in the Grand Canyon National Park, Arizona.
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The path passes next to a distinctive rocky formation. On the approach it appears as a low cliff but from the far side it is seen to be split by a whole series of holes into a row of natural arches known as The Coves.
Herb I. Cide, code name, Agent Orange, operated in the lush forests of the Mojave Desert in the 1940s. He was a bad mofo leaving a wake of defoliation everywhere he went.
Red Rock Canyon State Park, California 2015
What an awesome rock, there is also three plaques on it dedicated to people who lost their lives. Two were a couple of guys that used to surf here, I am not 100% sure but I think they died in the "Bali bombings"., The other two plaques were for two ladies that died by accident, probably on the beach or drowned..
This captivating image captures a waterfall cascading down a rugged rock face, framed by towering cliffs. The water flows gracefully down the mountain, creating a striking contrast with the surrounding rough textures of the stone. Sparse greenery adds a touch of life to the harsh, rocky landscape, while the clear blue sky enhances the dramatic scene. The photograph evokes a sense of serenity and power, showcasing nature's beauty and strength.
-Sierra de Cazorla (Spain)
Hierve Al Agua
Hierve el Agua (Spanish for "the water boils") is set of natural rock formations in the Mexican state of Oaxaca that resemble cascades of water. The site is located about 70 km east of Oaxaca city, past Mitla, in the municipality of San Lorenzo Albarradas, with a narrow, winding unpaved road leading to the site. The site consists of two rock shelves or cliffs which rise between fifty and ninety metres from the valley below, from which extend nearly white rock formations which look like waterfalls. These formations are created by fresh water springs, whose water is over-saturated with calcium carbonate and other minerals. As the water scurries over the cliffs, the excess minerals are deposited, much in the same manner that stalactites are formed in caves. One of the cliffs, called the "cascada chica" (small waterfall) or the Amphitheatre, contains two large artificial pools for swimming as well as a number of small natural pools. One of the artificial pools is very near the edge of the cliff.
Trent River is located about three kilometers south of Courtenay, BC on Vancouver Island. It is a great walk in August when the river is down and you can walk the river bed without getting your feet wet. The bank is made of marine shale. It is a magical place that is 80 million years old. It is has numerous crystal clear swimming holes and if you are a fossil hunter it is a great place to spend an afternoon banging rocks and looking for a treasure of years past.
While back in Prescott for an extended visit and catch up with my folks, I took some time to photograph around the nearby area including an overnight trip to the Grand Canyon and down to Phoenix. Photos are from that period.
Images from a few days spent exploring the beauty of the Slovenian countryside in spring.
All images by Alex Berger, please reach out directly for licensing or usage requests.
The Pizzi Bianchi (White Peaks) which overlook the south coast of Ischia. The peaks are made of white tufa, eroded and sculpted over centuries by the weather.
Age: 343-337Ma
Viséan
Middle Mississippian Epoch
Carboniferous Period - Giant arthropods and amphibians, early reptiles, most plants fern or lycophyte-like, known for tropical forests and seas
Paleozoic Era - pre-Dinosaurs
Location: England
Lancashire
Hurst Green (Stonyhurst)
Dinckley
Dinckley Hall
The brook east of Dinckley Bridge
Rock Type: Bowland Shale Formation mudstone.
Specimen:
A goniatite. Slight shell ridging can be seen. Very crushed and flattened in the shale.
Species:
Goniatites is a genus of extinct ammonoid cephalopods that lived from the Devonian to the Permian periods, roughly 390 to 250 million years ago. The genus belongs to the order Goniatitida, which is characterised by its intricately folded, or lobed, suture lines along the shells. These marine animals had coiled, chambered shells that served as buoyancy aids, allowing them to move vertically within the water column.
The name Goniatites is derived from the Greek word "gonia," meaning "angle," referring to the angular lobes in their suture patterns. This suture design differentiates them from later ammonoids like ceratites and ammonites, which have more complex sutures. As with all ammonoids, the animal resided in the outermost chamber of its shell, while the inner chambers were filled with gas or fluid to control buoyancy.
The shell of Goniatites was generally smooth or only slightly ribbed, and its size varied widely depending on the species, with some reaching several centimetres in diameter. Like other ammonoids, Goniatites is believed to have been an active predator, feeding on small marine organisms such as crustaceans and plankton.
Fossils of Goniatites are commonly found in marine sediments across the world, especially in areas that were once part of shallow seas. Their wide geographic distribution and distinctive suture patterns make them valuable index fossils for dating Palaeozoic rocks. The extinction of Goniatites occurred during the Permian mass extinction, marking the end of this genus.
Ammonoids are an extinct group of spiral-shelled cephalopods belonging to the subclass Ammonoidea, more closely related to modern coleoids (octopuses, squids, and cuttlefish) than to shelled nautiloids like Nautilus. They first appeared during the Devonian period (around 409 million years ago) and went extinct shortly after the Cretaceous-Paleogene extinction event (66 million years ago). Originating from bactritoid nautiloids, ammonoids are commonly referred to as "ammonites," although this term technically applies to the order Ammonitida, the last surviving group of ammonoids from the Jurassic until their extinction.
Ammonites are prized as index fossils, as their presence helps geologists link rock layers to specific time periods. Their fossilized shells typically appear as tightly coiled planispirals, but some variations, such as helically coiled or non-spiraled forms (heteromorphs), have been discovered.
The name "ammonite" derives from the spiral shape of their fossilized shells, which resemble coiled ram's horns. The term comes from Pliny the Elder, who called them "ammonis cornua" ("horns of Ammon") after the Egyptian god Ammon, often depicted with ram’s horns. Many ammonite genera have names ending in -ceras, from the Greek word "kéras" meaning "horn."
Ammonoids are distinguished from nautiloids by the structure of their septa, the walls dividing the chambers of their shells (phragmocone). Their suture lines—the intersection of septa with the outer shell—are more complex, featuring lobes and saddles. Three main suture patterns define ammonoids: Goniatitic – Characterized by undivided lobes and saddles, typical of Paleozoic ammonoids. Ceratitic – Lobes with subdivided tips (saw-toothed) and rounded saddles, common in Triassic ammonoids. Ammonitic – Highly subdivided lobes and saddles, found in Jurassic and Cretaceous ammonoids.
The soft body of ammonoids occupied the largest chamber at the end of the shell coil, while earlier chambers, filled with gas, aided in buoyancy. A tube called the siphuncle connected these chambers, allowing the ammonoid to regulate buoyancy by emptying water from the chambers through osmotic processes. Their shells were generally planispiral, with varying degrees of overlap between the whorls. This degree of overlap is reflected in two main shell types: Involute shells (e.g., Anahoplites) have outer whorls that largely cover earlier whorls. Evolute shells (e.g., Dactylioceras) have minimal overlap, with a large umbilicus exposing earlier whorls.
Ammonoids exhibited various shell forms, each suggesting different lifestyles and levels of hydrodynamic efficiency. Some major forms include: Oxycone – Narrow, involute shells with sharp keels, adapted for rapid swimming. Serpenticone – Evolute, discoidal shells; flattened for efficient acceleration, likely planktonic or nektonic. Spherocone – Broad, globular shells, suited for vertical migration in the water column. Platycone and Discocone – Intermediate forms between oxycones, spherocones, and serpenticones.
These shapes likely influenced how ammonoids swam, with some species (such as Oxynoticeras) thought to have been efficient swimmers, while others were slower bottom-dwellers.
Ammonoids likely lived in the upper 250 meters of the water column and are often found in rocks deposited in open-water conditions. Fossil evidence suggests they may have fed on plankton, with some ammonites showing remains of small molluscs and isopod larvae in their buccal cavities. Like modern cephalopods, ammonoids may have defended themselves by ejecting ink, a feature occasionally preserved in fossil specimens.
The chambered structure of ammonite shells, known as the phragmocone, consisted of progressively larger chambers (camerae) divided by septa. The living animal occupied the last chamber, continuously adding new chambers as it grew. This chambered design helped maintain buoyancy and control movement within the water column. Ammonites with shells that diverged from the typical planispiral shape are known as heteromorphs, featuring more open or non-spiral coiling.
In medieval Europe, ammonite fossils were believed to be petrified snakes, known as "snakestones" or "serpentstones," often associated with legends of saints such as St. Hilda of Whitby and St. Patrick. Traders would sometimes carve or paint snake heads on the fossils to enhance their resemblance to snakes, selling them as objects of mythological or healing significance.
I had heard of this lighthouse years ago and had wanted the opportunity to photograph it. Earlier in the day I had hiked up to the lighthouse, but the angles I got from there were not what I was looking for. I went down to Waikiki Beach for this shot and worked across piles of driftwood looking for the right angle. I finally found the spot I liked, just needed to wait for the right waves. The late afternoon light helped bring it all together. Photo by Steve Coyle Photography (www.stevecoylephotography.com)
Hierve Al Agua
Hierve el Agua (Spanish for "the water boils") is set of natural rock formations in the Mexican state of Oaxaca that resemble cascades of water. The site is located about 70 km east of Oaxaca city, past Mitla, in the municipality of San Lorenzo Albarradas, with a narrow, winding unpaved road leading to the site. The site consists of two rock shelves or cliffs which rise between fifty and ninety metres from the valley below, from which extend nearly white rock formations which look like waterfalls. These formations are created by fresh water springs, whose water is over-saturated with calcium carbonate and other minerals. As the water scurries over the cliffs, the excess minerals are deposited, much in the same manner that stalactites are formed in caves. One of the cliffs, called the "cascada chica" (small waterfall) or the Amphitheatre, contains two large artificial pools for swimming as well as a number of small natural pools. One of the artificial pools is very near the edge of the cliff.
Age: 343-337Ma
Viséan
Middle Mississippian Epoch
Carboniferous Period - Giant arthropods and amphibians, early reptiles, most plants fern or lycophyte-like, known for tropical forests and seas
Paleozoic Era - pre-Dinosaurs
Location: England
Lancashire
Hurst Green (Stonyhurst)
Dinckley
Dinckley Hall
The brook east of Dinckley Bridge
Rock Type: Bowland Shale Formation mudstone.
Specimen:
A goniatite. Slight shell ridging can be seen. Very crushed and flattened in the shale.
Species:
Goniatites is a genus of extinct ammonoid cephalopods that lived from the Devonian to the Permian periods, roughly 390 to 250 million years ago. The genus belongs to the order Goniatitida, which is characterised by its intricately folded, or lobed, suture lines along the shells. These marine animals had coiled, chambered shells that served as buoyancy aids, allowing them to move vertically within the water column.
The name Goniatites is derived from the Greek word "gonia," meaning "angle," referring to the angular lobes in their suture patterns. This suture design differentiates them from later ammonoids like ceratites and ammonites, which have more complex sutures. As with all ammonoids, the animal resided in the outermost chamber of its shell, while the inner chambers were filled with gas or fluid to control buoyancy.
The shell of Goniatites was generally smooth or only slightly ribbed, and its size varied widely depending on the species, with some reaching several centimetres in diameter. Like other ammonoids, Goniatites is believed to have been an active predator, feeding on small marine organisms such as crustaceans and plankton.
Fossils of Goniatites are commonly found in marine sediments across the world, especially in areas that were once part of shallow seas. Their wide geographic distribution and distinctive suture patterns make them valuable index fossils for dating Palaeozoic rocks. The extinction of Goniatites occurred during the Permian mass extinction, marking the end of this genus.
Ammonoids are an extinct group of spiral-shelled cephalopods belonging to the subclass Ammonoidea, more closely related to modern coleoids (octopuses, squids, and cuttlefish) than to shelled nautiloids like Nautilus. They first appeared during the Devonian period (around 409 million years ago) and went extinct shortly after the Cretaceous-Paleogene extinction event (66 million years ago). Originating from bactritoid nautiloids, ammonoids are commonly referred to as "ammonites," although this term technically applies to the order Ammonitida, the last surviving group of ammonoids from the Jurassic until their extinction.
Ammonites are prized as index fossils, as their presence helps geologists link rock layers to specific time periods. Their fossilized shells typically appear as tightly coiled planispirals, but some variations, such as helically coiled or non-spiraled forms (heteromorphs), have been discovered.
The name "ammonite" derives from the spiral shape of their fossilized shells, which resemble coiled ram's horns. The term comes from Pliny the Elder, who called them "ammonis cornua" ("horns of Ammon") after the Egyptian god Ammon, often depicted with ram’s horns. Many ammonite genera have names ending in -ceras, from the Greek word "kéras" meaning "horn."
Ammonoids are distinguished from nautiloids by the structure of their septa, the walls dividing the chambers of their shells (phragmocone). Their suture lines—the intersection of septa with the outer shell—are more complex, featuring lobes and saddles. Three main suture patterns define ammonoids: Goniatitic – Characterized by undivided lobes and saddles, typical of Paleozoic ammonoids. Ceratitic – Lobes with subdivided tips (saw-toothed) and rounded saddles, common in Triassic ammonoids. Ammonitic – Highly subdivided lobes and saddles, found in Jurassic and Cretaceous ammonoids.
The soft body of ammonoids occupied the largest chamber at the end of the shell coil, while earlier chambers, filled with gas, aided in buoyancy. A tube called the siphuncle connected these chambers, allowing the ammonoid to regulate buoyancy by emptying water from the chambers through osmotic processes. Their shells were generally planispiral, with varying degrees of overlap between the whorls. This degree of overlap is reflected in two main shell types: Involute shells (e.g., Anahoplites) have outer whorls that largely cover earlier whorls. Evolute shells (e.g., Dactylioceras) have minimal overlap, with a large umbilicus exposing earlier whorls.
Ammonoids exhibited various shell forms, each suggesting different lifestyles and levels of hydrodynamic efficiency. Some major forms include: Oxycone – Narrow, involute shells with sharp keels, adapted for rapid swimming. Serpenticone – Evolute, discoidal shells; flattened for efficient acceleration, likely planktonic or nektonic. Spherocone – Broad, globular shells, suited for vertical migration in the water column. Platycone and Discocone – Intermediate forms between oxycones, spherocones, and serpenticones.
These shapes likely influenced how ammonoids swam, with some species (such as Oxynoticeras) thought to have been efficient swimmers, while others were slower bottom-dwellers.
Ammonoids likely lived in the upper 250 meters of the water column and are often found in rocks deposited in open-water conditions. Fossil evidence suggests they may have fed on plankton, with some ammonites showing remains of small molluscs and isopod larvae in their buccal cavities. Like modern cephalopods, ammonoids may have defended themselves by ejecting ink, a feature occasionally preserved in fossil specimens.
The chambered structure of ammonite shells, known as the phragmocone, consisted of progressively larger chambers (camerae) divided by septa. The living animal occupied the last chamber, continuously adding new chambers as it grew. This chambered design helped maintain buoyancy and control movement within the water column. Ammonites with shells that diverged from the typical planispiral shape are known as heteromorphs, featuring more open or non-spiral coiling.
In medieval Europe, ammonite fossils were believed to be petrified snakes, known as "snakestones" or "serpentstones," often associated with legends of saints such as St. Hilda of Whitby and St. Patrick. Traders would sometimes carve or paint snake heads on the fossils to enhance their resemblance to snakes, selling them as objects of mythological or healing significance.