1) Calcite
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https://www.crosswordclues.com/clue/cretaceous
1) Chalky
Found on
https://www.crosswordclues.com/clue/cretaceous
The Cretaceous (s, {respell|krə|TAY|shəs}), derived from the Latin `creta` (chalk), usually abbreviated K for its German translation Kreide (chalk), is a geologic period and system from circa {ma|cretaceous|{{period start error|cretaceous}}} to {Ma|paleocene|million} years (Ma) ago. In the geologic timescale, the Cretaceous follows the Jurassi.....
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http://en.wikipedia.org/wiki/Cretaceous
of or resembling chalk; of a whitish colour
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http://phrontistery.info/c.html
• (a.) Having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk. • Alt. of Cretacic
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http://thinkexist.com/dictionary/meaning/cretaceous/
The final period of the Mesozoic era (after the Jurassic and before the Tertiary period of the Cenozoic era), thought to have covered the span of time between 144 and 65 million years ago; also, the corresponding system of rocks. It is named after the Latin word for chalk (creta) because of the English chalk beds of this age.
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http://www.encyclo.co.uk/local/22047
geological strata formed during the period 140 million to 65 million years before present;
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http://www.encyclo.co.uk/visitor-contributions.php
Cre·ta'ceous (kre*tā'shŭs)
adjective [ Latin
cretaceus , from
creta chalk. See
Crayon .] Having the qualities of chalk; abounding with chalk; chalky; as,
cretaceous rocks and formations. See
Chalk .
Cretaceous acid ,
an old name for carbon...
Found on http://www.encyclo.co.uk/webster/C/186
Cre·ta'ceous adjective Also Cre*tac'ic (Geol.) Of, pertaining to, or designating, the period of time following the Jurassic and preceding the Eocene.
Found on http://www.encyclo.co.uk/webster/C/186
A period in history from 130 to 60 million years ago.
Found on http://www.juniorminers.com/glossary.html
Geologic period that occurred roughly 65 to 144 million years ago. During this period, the first flowering plant species appear and dinosaurs are at their greatest diversity. Dinosaurs die out at the end of this period.
Found on http://www.physicalgeography.net/physgeoglos/c.html
The Cretaceous was the eleventh geological period, 95,000,000 years ago, following the Jurassic and preceding the Eocene. The first marsupials evolved during this period. The cretaceous forms the upper strata of the Secondary series, immediately below the Tertiary series, and superincumbent on the Oolite system. This group is common to Europe, and ...
Found on http://www.probertencyclopaedia.com/browse/HC.HTM
A Period from 145 to 65.5 million years ago divided into two epochs:
Found on http://www.scientificpsychic.com/etc/geology-glossary.html
(L: creta=chalk) a geological period from 136 to 65 million years ago, marked by estensive deposits of limestone. The Cretaceous closed the period of the dinosaurs as the super continent Pangea broke apart. It heralded the evolution of modern plants and animals. See time table.
Found on http://www.seafriends.org.nz/books/glossary.htm
[adj] - abounding in chalk 2. [adj] - of or relating to the Cretaceous geologic era 3. [n] - from 63 million to 135 million years ago
Found on http://www.webdictionary.co.uk/definition.php?query=Cretaceous
cretaceous Also see this closely related -eous suffix unit.
Found on http://www.wordinfo.info/words/index/info/view_unit/11/2
the last and final period of the Mesozoic era
Found on https://sciencetrek.org/sciencetrek/topics/dinosaurs/glossary.cfm
the period of geological time running from 145 â€` 65 million years ago. The name comes from the chalk which was the main rock type deposited during this period. See Geological Timescale
Found on https://www.encyclo.co.uk/local/20800
adjective of or relating to or denoting the third period of the Mesozoic era
Found on https://www.encyclo.co.uk/local/20974
The final period of the Mesozoic era, spanning the time between 145 and 65 million years ago. The name is derived from the Latin word for chalk ('creta') and was first applied to extensive deposits of this age that form white cliffs along the English Channel between Great Britain and France.
Found on https://www.encyclo.co.uk/local/21202
Period of geological time approximately 143–65 million years ago. It is the last period of the Mesozoic era, during which angiosperm (seed-bearing) plants evolved, and dinosaurs reached a peak. The end of the Cretaceous period is marked by a mass extinction of many lifeforms, most notably the dinosaurs. The north European chalk, which form...
Found on https://www.encyclo.co.uk/local/21221
geological period in which chalk deposits were formed and flowering plants appeared; this period began 135,000,000 years ago
Found on https://www.encyclo.co.uk/local/22348
The period of time about 65 and 142 million years ago.
Found on https://www.encyclo.co.uk/local/23001
resembling or containing chalk. · (cap.)noting or pertaining to a period of the Mesozoic Era, from 140 million to 65 million years ago, characterized by the greatest development and subsequent extinction of dinosaurs and the advent of flowering plants and modern insects. See table under
Found on https://www.infoplease.com/dictionary/cretaceous
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