. Collier's new encyclopedia : a loose-leaf and self-revising reference work ... with 515 illustrations and ninety-six maps. , widely spread on the plains,are doubtful on the plateaus. Duringthe Jurassic period, immense fresh waterbasins covered the surface of those pla-teaus, and have left their traces in Ju-rassic coal beds, which are found in thedepressions of the plateaus and lowlands^Carboniferous deposits are met with inTurkestan, India, and western Asia;while in eastern Asia the numeious coal-beds of Manchuria, China, and the archi-pelagoes are all Jurassic. More than 120 active volcano
. Collier's new encyclopedia : a loose-leaf and self-revising reference work ... with 515 illustrations and ninety-six maps. , widely spread on the plains,are doubtful on the plateaus. Duringthe Jurassic period, immense fresh waterbasins covered the surface of those pla-teaus, and have left their traces in Ju-rassic coal beds, which are found in thedepressions of the plateaus and lowlands^Carboniferous deposits are met with inTurkestan, India, and western Asia;while in eastern Asia the numeious coal-beds of Manchuria, China, and the archi-pelagoes are all Jurassic. More than 120 active volcanoes areknown in Asia, chiefly in the islands ofthe S. E., the Philippines, Japan, theKurile, and Kamchatka, and also in afew islands of the Seas of Bengal andArabia, and in western Asia. Numeroustraces of volcanic eruptions are foundin eastern Tian-shan in the northwesternborder ridges of the high Siberian pla-teau, and in the S. W. of Aigun, m ,^heireastgeewredis; of ionIm,;all ofar- les, ge-iveim,ry,im- olegle!adonthebetidethethean,sat^heoftatar,er,;heer,tanral nain-ni-byla-ndorahend;h6;heich. ASIA 297 ASIA Manchuria. Earthquakes are frequent,especially in Armenia, Turkestan, andaround Lake Baikal. Minerals.—There are gold mines ofgreat wealth in the Urals, the Altai, andeastern Siberia; and auriferous sandsare found in Korea, Sumatra, Japan,and in the Caucasus Mountains. Silveris extracted in Siberia; platina, in theUrals; copper, in Japan, India, andSiberia; tin, in Banca; mercury, inJapan. Iron ore is found in nearly allthe mountainous regions, especially inAsia Minor, Persia, Turkestan, India,China, Japan, and Siberia; but ironmining is still at a rudimentary coal-beds are spread over Chinaand the islands of the Pacific (Hainan,Japanese Archipelago, Sakhalin), east-ern Siberia, Turkestan, India, Persia, andAsia Minor. They cover no less than500,000 square miles in China alone; butthe extraction of coal is as yet verylimited. Graphi
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Keywords: ., bookcentury1900, bookdecade1920, bookpu, bookyear1921, westernasia
