منابع مشابه
Frequency of False Heartwood of Stems of Poplar Growing on Farmland in Sweden
Swedish owners of poplar stands are interested in both the wood quality and the use of poplars that are soon to be harvested. An important concern is the frequency of false heartwood (FHW) in the stems. We have presented an overview of the factors causing discolored wood as well as the industrial use and quality of the end products. We have studied poplar stems growing at 22 sites in Sweden bet...
متن کاملThe Ordovician Hammer
Transposition in conservative fields reaches its full potential in case that is unexplainable for any well-established theory. There are a number of phenomena and findings in various areas of science that stays in disagreement with those theories. Number of them were analyzed and described in this paper. Additionally, reason for Z-Process and its consequences in the galaxy scale was given.
متن کاملA single asteroidal source for extraterrestrial Ordovician chromite grains from Sweden and China: High-precision oxygen three-isotope SIMS analysis
We examined oxygen three-isotope ratios of 48 extraterrestrial chromite (EC) grains extracted from mid-Ordovician sediments from two different locations in Sweden, and one location in south-central China. The ages of the sediments ( 470 Ma) coincide with the breakup event of the L chondrite parent asteroid. Elemental compositions of the chromite grains are generally consistent with their origin...
متن کاملThe Geology of Ohio--the Ordovician
To geologists, the Ordovician System of Ohio is probably the most famous of the state's Paleozoic rock systems. The alternating shales and limestones of the upper part of this system crop out in southwestern Ohio in the Cincinnati region and yield an incredible abundance and diversity of well-preserved fossils. Representatives of this fauna reside in museums and private collections throughout t...
متن کاملThe tail of the Ordovician fish Sacabambaspis.
The tail of the earliest known articulated fully skeletonized vertebrate, the arandaspid Sacabambaspis from the Ordovician of Bolivia, is redescribed on the basis of further preparation of the only specimen in which it is most extensively preserved. The first, but soon discarded, reconstruction, which assumed the presence of a long horizontal notochordal lobe separating equal sized dorsal and v...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1891
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800186388