THE DEVELOPMENT OF BAGUIO PLATEAU 



Honorary Curator, Department of Paleontology, California Academy of 

 Science, Golden Gate Park, San Francisco, California 



TWELVE PLATES AND SIX TEXT FIGURES 



Introduction. Pleistocene. 



Review op Previous Work. Stream gravels. 



Geology. Development of Baguio Plateau. 



General statement. General statement. 



Diorite. Loacan Valley. 



Vigo group, Miocene and intru- Trinidad Valley, 



sives in the Vigo group. Minor modifications. 



Vigo Fauna. Extent op BAGmo p^^ 



Limestone and conglomerate of The present upland flora of 



Malumbang-Pliocene age. Baguio Plateau and Benguet 



Malumbang Fauna. and its development. 



Areal distribution of the Malum- Accelerated Tropical Peneplana- 



bang formation. ti 0N> 



Baguio Formation. Climate of Baguio Plateau. 



Stratigraphic relations of the Summary. 

 Baguio formation to Vigo and 

 Malumbang. 

 Faulting and landslides in the 



Baguio formation. 

 Flora. 



INTRODUCTION 



After several years spent in the study of Tertiary problems in 

 the temperate regions of the Pacific Coast states of the United 

 States, the writer has been much impressed with the differences 

 in geologic and biologic processes of the Tropics as compared 

 with similar processes in the temperate regions. Many times, 

 during field work in the Philippines in the last three years, 

 suggestions of these great differences were obtained in many 

 connections. The exceedingly heavy rainfall over portions of 

 the Archipelago and observations on results of these torrential 



