Sentences with phrase «rock deposits by»

Hard rock deposits by and large are not economic at current spot (or term) uranium prices, so if you see uranium at $ 75 or $ 80 per pound in the coming years (I don't), purchasing shares in hard rock uranium development companies could lead to gains.

Scientists analyzing the texture of the rocks deposited by the landslides say they were transported by liquid water, water ice, or mud.

Here, giant rocks deposited by ancient volcanoes shelter sea pools and grottos teeming with marine life.

Not exact matches

Marbles in metamorphic aureoles and iron - rich skarns appear to be favored sites for gold mineralization in these deposits, perhaps due to the rheological character, permeability after fracturing, and chemical reactivity of those rocks to alteration by hydrothermal fluids.

The deposit is bounded by the Eastern Graben Fault, a major structure that separates the Oligocene age sedimentary and volcanic rocks to the west from Mesozoic metamorphic basement rocks to the east.

Deposits within the belt are hosted by similar rocks to the Tad / Toro Project and include the Casino porphyry copper - gold - molybdenum deposit (55 km northwest of the Tad / Toro Project), the Laforma low sulphidation epithermal vein deposit and the Antoniuk intrusion related gold deposit (60 km southeast of the Tad / Toro Project).

However an examination of other articles by the same author in Ex Nihilo reveals that, to Snelling 1, everything geological (Ayers Rock, Mt Isa ore deposits, Bass Strait oil and gas, Queensland coal deposits, Great Barrier Reef, etc.,) can be explained as the result of Noah's year - long Flood.

At those outcrops, the researchers calculated the percent of mud rock in the overall deposit by measuring the thickness of the muddy layers compared with the thickness of layers containing larger grains such as sand.

Extracting gas from deep shale deposits by fracturing the rock using a high - pressure mix of water, sand and chemicals is a hot topic.

Thirty to forty rock and sediment core samples, each about 15 grams, will be hermetically sealed in titanium tubes and deposited in a safe location on the surface of Mars for possible retrieval by a future mission.

Within the Pilbara hotspring deposits, the researchers also discovered stromatolites — layered rock structures created by communities of ancient microbes.

The deposits are exposed in cross section as relatively pure water ice, capped by a layer one to two yards (or meters) thick of ice - cemented rock and dust.

Ward and Delph calculated their plutonic - to - volcanic ratio by comparing the volume of regions where seismic waves travel extremely slowly beneath volcanically active regions, indicating some melt is present, with the volume of rock deposited on the surface by volcanoes.

Rocks and debris deposited by the floodwaters around the children's home show the earthquake and flood must have happened within a year of each other.

By looking at the chemistry of rocks deposited during that time period, specifically coupled carbon and sulfur isotope data, a research team led by University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1 percent but much less than previous estimates for this evenBy looking at the chemistry of rocks deposited during that time period, specifically coupled carbon and sulfur isotope data, a research team led by University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1 percent but much less than previous estimates for this evenby University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1 percent but much less than previous estimates for this event.

«From now on, continues Castelltort, we know that by calculating the ratio between 13C and 12C sampled in similar slope deposits close to continents, we can have an indication of the sea level, which means it's possible to better predict the distribution of sedimentary rocks in our subsurface.»

The dunes also appear to have evolved similarly to those found on Earth, in that the original rocks have been deposited from somewhere else by volcanoes, oceans, rivers, etc. and then moved, shaped, and ground up by wind.

By studying the distribution and features of the post-impact ocean deposits and fragmented rock that filled the crater, Andrew J. Retzler of Idaho State University and colleagues present a new map characterizing the size and shape of the Alamo crater.

Solutions offered by the public range from thoughtful to wacky: «Why couldn't it be possible to collect the larger pieces of trash by skimming the most polluted concentrations with troll nets and attaching them to helicopters that would then deposit them into the path of the ongoing lava flow of Kilauea to be consumed and incorporated into new rock?»

The combination of biofilm and mineral deposit reduced the permeability of the rock by 95 per cent, Mitchell says.

Those genes might show that peak ring microbes — descendants of those that lived after the impact — derive their energy not from carbon and oxygen, like most microbes, but from iron or sulfur deposited by hot fluids percolating through the fractured rock.

Another complication is that the concentration of methane and other gases in natural deposits could be affected not just by chemistry but also by the speed at which they seep through the surrounding rocks.

Slowly, the carbonate rocks will be eroded and carried by rivers to the oceans, deposited to the ocean floor and, eventually, subducted along the oceanic / continental plate boundaries.

«That's not crazy levels of enrichment, but since there was this big hole in the ground and you had 200,000 to 300,000 years, that lithium was progressively leached from the nearby rock by rainwater and deposited in the caldera lake sediments.»

Same is true for any other rapid release of a large enough carbon reservoir, such as large enough methane deposits, if they exist, or carbonate rock, if large enough a mass is heated by large enough a magma.

Gray rubble on the flanks of Mauna Kea on the island of Hawaii lie in contrast to the red volcanic rock behind them, and were deposited by a glacier that disappeared thousands of years ago.

The latter events left behind distinctive rock - sequences typically consisting of tillites (ancient boulder - clay, now solid rock) representing ice - deposited debris, overlain with a depositional break by cap - carbonates (chemical sediments of marine origin deposited during interglacials following global sea - level rises).

Bright features such as these are caused by the presence of freshly crushed rock material that was excavated and deposited during the highly energetic collision of a meteoroid with Mercury to form an impact crater.

An alluvial fan is a pattern of sedimentary rocks, dirt, and sand deposited by flowing water â $ «in this case, perhaps an ancient Martian river.

Samples of speleothems, ancient cave deposits, wall rock and video records collected by The Cambrian Foundation provided necessary data to scientists.

The flat rocks are perfect for sunbathing, as if they were deposited there by nature for exactly that purpose.

Moraine Creek is certainly an apt name; it has carved through an impressive cake of glacial deposits containing rocks of all origins and colors, ground together, mixed, and mashed by creeping glaciers.

Global change, we were taught, occurred slowly and by commonplace mechanisms: sediment carried by water, deposited a grain at a time: erosion effected by water and wind, the hardest rocks slowly ground down crystal by crystal.

Buffering by HUGE deposits of carbonate rocks.

A fracture caused by the drilling process would have to extend through the several thousand feet of rock that separate deep shale gas deposits from freshwater aquifers.

By STANLEY REED Published: December 13, 2012 LONDON — The British government gave the go - ahead Thursday for exploratory hydraulic fracturing, or fracking, to extract natural gas from shale - rock deposits.

The latter events left behind distinctive rock - sequences typically consisting of tillites (ancient boulder - clay, now solid rock) representing ice - deposited debris, overlain with a depositional break by cap - carbonates, chemical sediments of marine origin deposited during interglacials following global sea - level rises.