Sentences with phrase «using drill cores»
I had been studying the paleosediments of these valleys, using drill cores, doing pollen analysis, and finding out that these kind of jerks went on down through time two million years.
https://www.scientificamerican.com/ Not exact matches
The results discussed in this news release are from drill core samples obtained by PQ and HQ - size triple - tube diamond core drilling using two PMC400 man - portable drill rigs owned by SAMJ and operated by Sumiko Resources Exploration & Development Co., Ltd. (a wholly owned exploration services subsidiary of Sumitomo Metal Mining Co., Ltd.) The drilling program was fully supervised by SAMJ senior project geologists at the drilling site.
Dr Bayrakci and the team will collect cores of rocks and take fluid and microbial samples using two specialist robot drills.
The team members dove to the reef and took several cores from large, blobby dome - shaped Porites lobata corals using an underwater hydraulic drill powered by vegetable oil.
Jimenez used a little drill bit to take a tiny sample every millimeter for the length of each core.
Now, using two deep cores collected at two Ocean Drilling Program sites in the Southern Ocean, Jaccard and colleagues have reconstructed ocean records of productivity and vertical overturning reaching back a million years, through multiple glacial - interglacial cycles.
Using sediment cores, long cylinders drilled into the marsh floor that offer scientists a look back through time, they were able to reconstruct sea - level changes since 1788.
Sean Mackay uses a manual drill to obtain an ice core sample while Marchant looks on.
It's a low - tech version of the drills they usually use, and it is typically employed to test core quality at a site before large - scale drilling.
The idea that sulfide - based photosynthesis was important during the Boring Billion is based on one limited data set from drill cores in northern Australia showing pigment molecules associated with sulfide - using bacteria.
The team used a 300 - metre deep core drilled through the layers of sandstone and claystone at a site on the Illawarra plateau.
In 1959, the U.S. Army Corps of Engineers built the subterranean city under the guise of conducting polar research — and scientists there did drill the first ice core ever used to study climate.
The team will switch drill bits from the large one that takes ice cores as it goes to a smaller one only a few centimetres in diameter, which will melt its way down using a sterile silicone fluid.
Previous research by Box using ice cores — long cylinders drilled out of the ice sheet that let scientists sample hundreds of years of ice layers — showed that in the past, snowfall has increased over the ice sheet as temperatures have risen.
Soccer players use this drill to develop a powerful core so they can cut and move quickly.
«Sometimes the way we use Common Core puts us further down the right path, and sometimes the way we use the Common Core turns into a way to know, «Okay, what am I going to drill them on this week?
Each handlebar is precision milled from walnut wood, using a CNC machine, drilled out for the hollow aluminum core to be inserted, and then capped on the ends with anodized or brushed aluminum end pieces.
The authors used scuba and pneumatic drills to penetrate the growing coral colonies and retrieve core samples.
Several years ago, the team assembled an arched metal building to house the high - tech, computer - controlled drill used to extract the cores in sections that average 2.7 meters in length — but the building's now nearly covered in snow.
Researcher Margarita Marinova uses an auger to drill a core from the ice pack at University Valley in the McMurdo Dry Valleys, Antarctica.
A custom - built stainless steel core barrel 6 cm in diameter and 50 cm long fitted with a brass drill head containing carbide teeth was used, fashioned after a design developed by the Australian Institute for Marine Science.
The first long core (411m), using a drill developed by B. Lyle Hansen, was extracted at another site in Greenland in 1956: Dansgaard et al. (1973); for brief history and references, see also Langway et al. (1985); Levenson (1989) pp. 40 - 41; for a firsthand account, Alley (2000).
Specifically, the Jones 1998 data uses the upper part of the initial DSS core, thermally drilled in 1987, and analysed in new mass spectrometry facilities.
The team members dived to the reef and took several cores from large, blobby dome - shaped Porites lobata corals using an underwater hydraulic drill powered by vegetable oil.
Diane Thompson (left), Roberto Pépolas (center), and Alexander Tudhope use a vegetable - oil - powered hydraulic drill to take a core from a Porites lobata coral head near Wolf Island in the Galápagos.
Jimenez used a little drill bit to take a tiny sample every millimeter for the length of each core.
I was astonished at the numerous thick layers of coal revealed by the drill cores — it was seemingly endless and the geos calculated the total coal reserve (reserve used inappropriately by me) revealed by this exploration effort contained many times the known documented reserve in Australia.
Experienced, knowledgeable, and detail - oriented Petroleum Extraction specialist with strong experience in operating a variety of drills used to remove petroleum from the earth, finding, and removing core samples for testing.