Tag: "silt" at biology news
First Dinosaur Embryo Skin Discovered -- Unhatched Embryos Are First Ever Found Of Giant-Plant Eating Dinosaurs
...s on its banks in a layer of mud. The covering of silt
protectedthe eggs, and some of their contents, from scavengers and disintegration by theelements. Repeated cycles of egg laying and flooding could have produced thesuper-abundance of fossil eggs and embryos found by the team. Given the number of egg...
Seabed Silt In Indian Ocean Consists Of Remains Of Summer Plankton
Almost 90% of the silt
on the floor of the Indian Ocean consists of the r...l of material is broken down at sea-bed level, the silt
consists almost entirely of the remains of this living material. However, the lime which was found o...
Colorado State and international scientists say loss in biodiversity by year 2100 could be consequence of global changes
... points on the landscape, they accumulate damaging silt
and excess nutrients from runoff. The earth's surface wasn't the only focus of the study. Wall, a professor of rangeland ecosystems and a specialist in soil biodiversity and microscopic invertebrates, said belowground species, from bacteria to wor...
2000 FALL MEETING: updated press conferences, press registration, and other information
...gypt. The ruins, under several meters of water and silt
and dating to the first millennium, may have been caused by two or three large historical earthquakes and/or subsidence and liquefaction of Nile delta sediments. Outstanding questions are the location of the faults responsible for these earthquakes, ...
Researchers zero in on date of early hominids
...eroded are ancient lake deposits - layers of clay, silt
and sand - that sometimes contain fish remains and other fossils. That composition, Levi said, is what made Erk-el-Ahmar difficult to date. "Carbon dating is good only back to about 50,000 years, and it depends on the availability of charcoal or ot...
Crater makes an impact on three sessions at GSA
...USGS scientists have recently identified a zone of silt
above the post-impact fallout that is devoid of signs of indigenous life. Wylie Poag points out that the heat from this impact must have instantly incinerated every living thing within hundreds of miles. Poag will review evidence -- such as fractu...
April GEOLOGY and GSA TODAY media highlights
...(plastic wrap) prior to burial, preventing mud and silt
from entering the open spiral of the fossil. The authors consider that this ancient clingfilm was a combination of microbial films and gelatinous marine snow, and think that this now-vanished organic matter carpeted large areas of seafloors then. The...
Microorganisms are cleaning up Boston Harbor, UMass study finds
... it was also believed that once PAHs sank into the silt
at the bottom of the harbor, they could not be oxidized or degraded a theory that the new study challenges. "This is important because it demonstrates that the self-purification capacity of the harbor is much greater than previously recognized," sai...
...ish water and impact the condition of estuaries as silt
flows down river. Merryl Alber (University of Georgia - Athens), will explore the management of freshwater inflow criteria for Texas, Florida and Georgia, in his talk, "A River runs to it: The effects of changing inflow to estuaries." Organisms in p...
How many fish in the sea? Census of Marine Life launches first report
...ter and settling at the bottom of the oceans. The silt
is wider than any other habitat on the planet V 5 km deep in places V giving depth of silt
the same scale as the ocean above. The abyssal plain contains 100,000 known species, mostly small c...
Salt-tolerant rice requires careful selection
...t fertiliser dependent. However for cultivation on silt
soils, only varieties with a genetic predispositio...rice is produced, most of the land is covered with silt
water. The growers in these countries often have to cope with a shortage of fertiliser as well. The ...