hills have a lot of water in them‚ and when the weather is very dry‚ water comes slowly from the chalk. Chalk is mostly formed from the calcareous (CaCO3) skeletons of countless tiny planktonic algaecalled coccoliths. It was laid down in the Upper Cretaceous period. Chalk can write on a chalk Board. Blackboard chalk is not real chalk. It is really gypsum (calcium sulfate)‚ but often people call it "chalk". People use it for drawing on hard things‚ because it is soft. If this chalk is rubbed on something
Premium Calcium carbonate Sedimentary rock Limestone
and high-efficient powder and superfine powder processing machinery which is used for grinding the medium and low-hard material that Moh’s hardness is below 6‚ humidity is less than 8%‚ and non-flammable non-explosive minerals‚ such as calcite‚ cretaceous‚ caoline‚ limestone‚ bentonite‚ talcum‚ mica‚ magnesite‚ illite‚ pyrophyllite‚ vermiculite‚ sepiolite‚ Attapulgite clay‚ rectorite‚ diatomite‚ barite and so on.The classified powder could be adjusted between 300 and 2500mesh. with the classifier
Premium
from fossil record‚ where remains of pollen grains of Northofagus have been found in regions outside the present range of any living species‚ namely Antarctica‚ Western Australia and Patagonia. This also confirms that the climate of Antarctica in Cretaceous times was very different from today. Landmasses undergo major changes of climate as they move across different latitudes. This affects evolutionary processes in that greater species diversity accumulates
Premium Continent Evolution Ocean
6. The supercontinent Pangaea started to break up about 200 million years ago. Are most hydrocarbon reservoirs in rocks that are younger than the start of the breakup‚ or older? (5 points) Most reservoirs were formed in the Jurassic and Cretaceous period. The age of these periods are less the 200 million years old. Therefore‚ the reservoir rocks are younger than the start of the Pangaea breakup. 7. Explain the main driving force behind Plate Tectonics. (5 points) The main driving
Premium Petroleum Petroleum geology Natural gas
reached out to a few of his partners to dive further into the topic. To do some more background research about the case‚ Alvarez hiked up and down the Apennine Mountains gathering samples of various rocks that would show the boundary between the Cretaceous and Tertiary periods. He found that on one side of the boundary there was a great number of diverse species of marine fossils‚ and the other side did not contain very many marine fossils at all. This would bring him back to the beginning by asking
Premium Scientific method Science Epistemology
been commissioned for extraction by Total E&P Denmark B.V.‚ a subsidy of the multinational company Total S.A.. “ In the southern portion of South America‚ Argentina’s Neuquén basin appears the most prospective with good potential evident in the Cretaceous
Premium Petroleum Natural gas Water
significant‚ he collected and studied the ants of Europe and described many species overlooked by his predecessors. In 1967 a fossil was found that was preserved in amber fossil which showed an extinct species of an ant dating as far back as the Cretaceous Age‚ near eighty million years ago (as cited in Ant Nest‚ 2005). Methods/Data The ant farm that was observed was numbered 15. The farm was located in the back of the biology lab room with artificial lighting. The ant farm structure is a clear
Premium Ant Myrmecology Ant colony
2012). 2 social/medical benefits * In the field of Paleontology‚ CT Scans allow paleontologists to analyze the interior structures of fossils without breaking or damaging the fossils. Recent studies have revealed a dinosaur from the Late Cretaceous Period with complex tubes and chambers within the crest (Gallagher‚ 2012). * CT images of body structures can guide radiologists in performing procedures such as: biopsies of suspected cancers‚ removal of internal body
Premium Medical imaging Radiography
Formation of the Philippine Islands The Indo-Australian plate is found south of the Eurasian and the Philippine Seaplates. It is generally oceanic‚ being submerged by Indian and Pacific Oceans‚ but it holds two gigantic land masses – the island continent of Australia and Indian subcontinent. Recent researches‚ however‚ show that these two land masses are moving independently of each other‚ thus‚ may actually be parts of separate plates. The Philippine Sea plate is found east of the Eurasian
Free Philippines Luzon Plate tectonics
Butterfly Avatar‚ metamorphosis‚ soul‚ courage to change. The life cycle of a butterfly goes like this egg‚larva‚pupa‚butterfly the egg hatches turning into larva then the larva turns into a pupa and the pupa turns into a butterfly then the butterfly starts the process all over again. catapiller or larva eats leaves so when you see them in your garden eating on your leaves they are eating but the first thing they eat is their own eggshell. the catatpiller then turns into a pupa which is cocoon that
Premium Insect Bird Honey bee