DIE SALINITÄTSFAZIES VON KEUPERSEDIMENTEN AUFGRUND VON BORGEHALTSBESTIMMUNGEN

The salinity facies of the Keuper sediments on the basis of the determination of boron content The boron concentration of illites from sediments of the German Keuper Basin has been investigated in order to define palaeosalinity. The regional boron distribution of the Schilfsandstein and Lettenkeupersandstein Formations which have been sedimented in great lateral uniformity plainly corresponds with the current directions evaluated from cross-bedding measurements. Short-time variations of palaeosalinity during the Gipskeuper Formation have no effect on boron concentration, thus confirming the laboratory experiments of the installation of boron in illites which indicated that considerable time is required for establishing the boron- illite equilibrium. The present investigations show that boron in illites can be success- fully applied to regional problems provided that close consideration is given to the mineralogical composition of the sediment.     

BARON FERDINAND VON RICHTHOFEN

The 5th of May this year the Centenary Anniversary of Ferdinand vonRichthofen was celebrated in all the geographical and geological institutionsof Germany and probably of many other countries.For he was not only the     

BARON FERDINAND VON RICHTHOFEN

The 5th of May this year the Centenary Anniversary of Ferdinand vonRichthofen was celebrated in all the geographical and geological institutionsof Germany and probably of many other countries.For he was not only the     

NEW OBSERVATIONS ON THE GENUS POSTSCHIZOTHERIUM VON KOENIGSWALD

Since publishing my note in 1936~2 on the upper and lower jaw(of one and the same individual) of Postschizotherium discovered inthe Pliocene of S.E.Shansi (Yush(?)),two additional fragments of lower     

KORNGRÖSSENANALYSE GROBKLASTISCHER SEDIMENTE MIT HILFE VON AUFSCHLUSS-PHOTOGRAPHIEN

Granulometric analysis of rudites on outcrop-photographs As it is impossible to determine the grain-size distribution of well-consolidated rudites by sieving, it has been attempted to use outcrop-photographs for their granulometric analysis. In order to assess the accuracy of this photo-method, nineteen samples of poorly consolidated rudites were subjected to analysis by both methods. It resulted that the two sets of data obtained could be correlated rather well, using a relatively simple formula. Although some broader experimental work would still seem advisable, it became quite clear that the photo-method is simpler as well as more accurate than the sieving method. It is therefore suggested to develop it as the standard method for granulometric studies of all rudites.     

李希霍芬地貌学思想在德国的继承与发展

文章介绍李希霍芬(1833～1905,F.vonRichthofen)对地貌学建立的重要贡献及这门学科自此以后在德国的理论进展;论证了在过去的100年中,在不同时期都有德国杰出的科学工作者叙述对李希霍芬著作的认同和赞赏。总体上来讲,很多人都同意称李希霍芬为关于地形和景观科学的“地貌学之父”。在A.洪堡(A.Humboldt)和C.李特尔(C.Ritter)早期概念的基础上,李希霍芬使地理学变成一门研究人类生存空间的自然科学。尽管在李希霍芬之后所发展起来的气候地貌学和地生态学的重要性是不可低估的,但直到今天李希霍芬所开展的与地质学有紧密联系的地貌学的分支仍具有活力。