| Added | Tue, 11/10/2016 |
| Sources | |
| Феномены | |
| Version type |
The meaning of the word "fossil" – turned to stone, which became like a stone. It usually understand fossils (fossils) – the remains and traces of organisms of past geological epochs.
Fossils are formed during the processes of fossilization. It is accompanied by the influence of various environmental factors in the passage of the processes of diagenesis - the physical and chemical transformations during the transition of the sediment in the breed, which includes the remains of organisms.
Fossils formed when dead plants and animals were not immediately eaten by predators or bacteria, and soon after the death was covered with silt, sand, clay, fly ash, which excluded the access of oxygen to them. In the course of formation of the precipitation of rocks, under the influence of mineral solutions of organic substances decomposed and were replaced with minerals (most commonly calcite, pyrite, opal, chalcedony). At the same time, due to the progressive course of the substitution process, the outer shape of the elements of the structure remains preserved.
Fossils are usually mineralized remains or imprints of plants and animals preserved in soils, rocks, solidified resins. Fossils are also called preserved traces of, for example, legs of the body on the soft sand, clay or dirt.
Fossil remains of crinoids are one of the most common minerals. Some limestone formations Dating from the Paleozoic and Mesozoic is almost entirely composed of them. Endoskeleton hands and stalk these marine animals composed of calcareous segments. Petrified segments of crinoids are called Tahiti. They have the appearance of stars and disks with a hole in the center that is sometimes connected to the columns.
These fossils are often mistaken for parts of the alien machines created by aliens hundreds of millions of years before humans.
Translated by «Yandex.Translator»
Tahiti — fossilized segments of the stems of crinoids.
Translated by «Yandex.Translator»
Sea Lily 1.
Author: MikeB
Photo gallery: "Zone of junction of Donbas and Azov. Carbon"
Translated by «Yandex.Translator»
Chalcedonian core stems crinoidea
Author: stepdi
Photo gallery: "Paleontological samples acquired for the collection"
The inner core of the stems of crinoidea, replaced by chalcedony. The size of the larger core of about 20 mm. of the Komsomol of Donbass. Age - Carboniferous. The nucleus consists of a Central rod (cast inner channel of the stem) and "strung" him "drive" (casts milenkovich gaps). The inset at top right shows that the "wheels" have a corrugated surface. The sample obtained by exchange from Michael Bittman (MikeB).
Translated by «Yandex.Translator»
Fragments of stems of crinoids
Author: Urizel
Photo Gallery: "Fossils"
Translated by «Yandex.Translator»
Fragments of stems and segments of sea lilies
Author: ftorbins
Photo gallery: "Fossils of the Stupinsky district of the Moscow region"
The diameter of the segment with patiosani channel 1cm.
Translated by «Yandex.Translator»
Fragments of the stalk of sea lilies
Author: Urizel
Photo Gallery: "Fossils"
Was found in one piece of argillit-like clays. Thrown into the water this piece, the breed was soggy and cracked completely freeing all the fragments without damaging them. Diameter of segments 3 mm.
Translated by «Yandex.Translator»
Fossil remains of the mollusc turritella
Turritella Casts
CREDIT: Science Stock Photography / Science Source
This is a stigmaria — a petrified root of a tree. Holes are places where small roots came out of the main root. Found on a beach on the east coast of Scotland.
As a rule, such roots turn into coal. The author of the photo confirmed that the beach where he found it is rich in pieces of coal, and there are many old coal mines in this area.
A brachiopod fossil or an alien head? You decide.
Seriously, imagine that you found something like this before the 19th century and have no idea about fossils. He also reminds me of a character from Star Wars. In truth, it is actually a brachiopod from a carboniferous tree called Spirifer.
Related facts
Related news
Scientists have explained the mystery of the rotating spheres found in the rock
American "moon rocks" turned out to be an earthly petrified tree
Log in or register to post comments
