06 R. A. DALY ORIGIN OF THE ALKALINE ROCKS 



Table showing Field Associations of Alkaline and Subalkaline Eruptives — Continued. 



Region. 



Alkaline eruptives. 



Associated subalka- 

 line eruptives. 



Carbonate rocks cut by 

 alkaline eruptives. 



Pilot Knob, Texas. 



Nephelite basalt. 





Cretaceous (and 

 older ? ) 1 i m e - 

 stones. 



Apache Mountains, 

 Texas. 



Nephelite syenite, 

 other syenites, 

 tinguaite, boston- 

 ite, paisanite , 

 phonolite. 





Paleozoic and Meso- 

 zoic limestones. 



Uvalde County, 

 Texas. 



Melilite - nephelite 

 basalt, nephelite 

 basanite, phono- 

 lite, nephelite 

 basalt, limburg- 

 ite. 



Plagioclase basalt. 



Mesozoic (and old- 

 er ?) limestones 

 and marls. 



Big Trees Quad- 

 rangle, Califor- 

 nia*. 



Latites. 



Granodiorite, an- 

 desites, basalt, 

 etcetera. 



Paleozoic limestones 

 and clay slates. 



Mother Lode Dis- 

 trict, California. 



Latites. 



Ditto. 



Ditto. 



Point Sal, Califor- 

 nia. 



Teschenite. 





Tertiary limestones 

 and clays ; Creta- 

 ceous shales. 



San Luis Obispo 

 County, Califor- 

 nia. 



Analcite diabase. 





Ditto. 



Beemerville, New 

 Jersey. 



Nephelite syenite. 



Diabase, etcetera. 



Lower Paleozoic do- 

 lomitichmestones. 

 (Also p r e-C a m - 

 brian limestones 



. ?) 



Brookville, New 

 Jersey. 



Nephelite syenite. 



Diabase. 



Pre-Cambrian lime- 

 stone adjacent. 



Adirondack Moun- 

 tains, New York. 



Alkaline syenite. 



Anorthosite, gran- 

 ite, etcetera. 



Grenville limestone. 



