History of the Jews in Latvia them were natives, including Jewish refugees who returned to their former residences from the interior of Russia, while the remainder came from other parts of the Soviet Union. About 48 percent of the Jews declared Yiddish as their mother tongue. The others mainly declared Russian as their language, while only a few hundred described themselves as Latvian-speaking. Of the total, 30,267 Jews (5/6) lived in Riga. The others lived in Daugavpils and other towns. According to private estimates, the Jews of Latvia in 1970 numbered about 50,000. The overwhelming majority of them lived in Riga, the capital, which became one
Geology of Latvia Geology of Latvia The geology of Latvia includes an ancient Archean and Proterozoic crystalline basement overlain with Neoproterozoic volcanic rocks and numerous sedimentary rock sequences from the Paleozoic, some from the Mesozoic and many from the recent Quaternary past. Latvia is a country in the Baltic region of Northern Europe. Several hundred boreholes have returned data about the Precambrian crystalline basement of Latvia, indicating young Middle Proterozoic intrusive rocks such as 1.65 billion year old rapakivi granite or 1.82 billion year old granodiorite in the northeast. Most basement probably formed before the Svecofennian orogeny, between the Archean and Proterozoic. The