AMPHIBOLITES AND RELATED ROCKS FROM 

 THE MORAINES, CAPE DENISON. 



'I 



BY 



F. L. BTILLWELL, D.Sc. 



WITH TWO PLATKS. 



CONTENTS. 



PAGE. 



I. Introduction ........................... 261 



II. Group IV*. Amphibolites and Eclogits ............... 263 



1. Kata Division ........................... 263 



llnrntblende-Plagiodase-Pijroxene-fTneiss. 

 No. 937, with relic structure of original dolrrit?. 

 Nos. 902, 067. Erratics from Cape Hunter. 



Garnet- Plagioclase-Pyroxene-Gneits. 



No. 693, related to eclogitcg. 

 Garntt-Plagioclase-Biotite-Gneisg. 



No. 227, pyroxene largely replaced by biotite. 



2. Meso Division .................... . ...... 264 



Pyroxene-amphibolites. 



Noe. 380, 351, 212. No. 212 contains large porphyroblasta of Ab, AD,. 

 No. 547, with felspar replaced by quartz. 



Amphibolites. 



Nos. 946, 956, with " sieve " structure. 

 No. 865, with porphyroblasto of felepar. 



Biot ite- A mphibolite. 



No. 597, with greyish colour in hand specimen, and a little lawsonite. 



3. Epi Division ........................... 266 



( 'hlnrite-A mphibolites. 



No. 985, with saussurltised felspar. 



20, with the separation of blue glancophane from green hornblende. 

 No. 965, an amphibolite with similar features and " sieve " structure. 

 No. 247, with porphyroblasts of felspar. 



it h more pronounced cataclaois and mortar stnicture than No. 247. 



No. 961, with remarkable mortar structure. 

 No. 2.13, hornblende extensively chloritised. 



Kpiilntf-( 'liliirite-schist. 



'10, n-n-inbles the epidote-biotite-chist. No. 1.53, found in i(u, except that bintite if replaced by 



'hl'irit*. 



Lawsm\itf -Chlorite- A mph iboHte-xrli < - / . 



No. 936, contains pyroxene and an excellent developmpnt of lawsonite. 



* The olMdBomtion adopted is that proposed by U. Grubenmann in " Die Kristallinen Bchiefer. ' Berlin, 1910. 



-'A 



