ROCKS FROM HONDURAS, CENTRAL AMERICA 532 
The granular types occur largely near the summits and on the 
north slope of the mountains forming the Sierra de Pija, while the 
extrusive types are found near the coast. The geologic events in 
the history of the region as revealed by the rocks studied may be 
epitomized as follows: 
t. Intrusion of granodiorites and tonalites accompanied by the 
extrusion of allied rock types. 
2. Folding. 
3. Intrusion of diabases and diorites. 
4. Faulting and crushing. 
5. Extrusion of olivine basalts. 
