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Emerged as a product of erosion from water, frost and wind which has shaped the spectacular pillars (hoodoos) the Bryce Canyon National Park is one of the most spectacular natural amphitheater. The eroded Claron limestone in which also fossils are found, leaves the impression of a subtle army from l ... moreEmerged as a product of erosion from water, frost and wind which has shaped the spectacular pillars (hoodoos) the Bryce Canyon National Park is one of the most spectacular natural amphitheater. The eroded Claron limestone in which also fossils are found, leaves the impression of a subtle army from limestone warriors. Named after the Mormon Pioneer Ebenezer Bryce, the natural spectacle was 1928 declared as national park. |
It is not possible to write a chapter about the mineral galena without looking at the history of lead and silver to name two of the most important raw materials and materials of humanity. How long people processed galena as main ore for the production of lead is unknown. As lead inter alia used as a ... moreIt is not possible to write a chapter about the mineral galena without looking at the history of lead and silver to name two of the most important raw materials and materials of humanity. How long people processed galena as main ore for the production of lead is unknown. As lead inter alia used as an additive to various melts (e.g. to bronze and the salt-cementation process for gold extraction) one can assume that the properties of this mineral were known before 3000 BC. Other sources speak of a history of lead about 7000-9000 years BC back. |
Die Halle A6 wurde neu geordnet. Die "Top Händler" wie immer mit einem beeindruckendem Angebot wurden etwas mehr in die Hallenmitte verschoben. Die Aufteilung erscheint schlüssig und die Resonanz war soweit sie mir zu Ohren kam gut. In der Halle war zudem die Ausstellung "Verborgene Schätze ... ein ... moreDie Halle A6 wurde neu geordnet. Die "Top Händler" wie immer mit einem beeindruckendem Angebot wurden etwas mehr in die Hallenmitte verschoben. Die Aufteilung erscheint schlüssig und die Resonanz war soweit sie mir zu Ohren kam gut. In der Halle war zudem die Ausstellung "Verborgene Schätze ... ein kurzer Showreport von Stefan Schorn |