česky english deutsch >>>

Straznik

Dadoxylon

Silicified fossil strain exhibited in the showcase next Suchardova house, is the largest yet discovered Late Carboniferous age of the tree in our territory. Measure the length of over 8 m and base diameter reaches about 1.2 m was discovered in 1953 during construction of the stadium in New Pace and one of the most valuable exhibits of the museum. Frequently used name, and informal „Araukarit“, which was due to the apparent similarities with wood blahočetů is currently outdated and no longer valid. Systematically, these type of wood called Dadoxylon and belong to the primitive coniferous plants (class Pinopsida) or extinct kordaitům (class Cordaitopsida). A rare remainder of the Carboniferous flora, ie to younger Paleozoic. Beginning Carboniferous unit is placed back over 354 million years. The end is placed in the Carboniferous period 298 million years before present. Carbon is thus divided into older and younger Lower Carboniferous Upper Carboniferous karbon.Na beginning paleokontinenty formed Gondwana continent, Laurussii, Siberia and other smaller microcontinent. Climate carbon was initially very warm. Atmosphere with an excess of carbon dioxide that is released during intense volcanic activity, was favorable to plant growth. And so in the Carboniferous time in the history of the continents of the Earth covered by herbaceous and tree flora. Warm climate is documented and rich deposits of coal. Trees type Dadoxylon to the Upper Carboniferous grows up to 45 m and a diameter tribes and over 2 meters. Representatives were among the most massive Permian and Carboniferous flora. Grew in drier, less wet environments without marshes. While kordaity extinct in the late Paleozoic, many representatives of coniferous plants survives to this day. Occurrence zkřemenělých stems of different plant types is Novopacký very abundant and valuable artifacts from this area can boast a number of important museums.

GPS position

N 50° 29.728', E 15° 30.842'
[GPX]

[MAPY.CZ]

Contact

Geopark UNESCO Český ráj
Jiří Vlasák
e-mail:vlasak@geopark-ceskyraj.cz
http://www.geopark-ceskyraj.cz