88 GUIDEBOOK OF THE WESTEEX UNITED STATES. 



San Francisco carthcjuake of 1906) passes out to sea at the moutli of 

 a little ravine haK a mile north of Mussel Eock and is crossed by the 

 railroad. The exposures of the Merced formation along the sea cliffs 

 were much finer before the San Francisco earthquake, which shook 



some of the cliffs. From 



m 



(21.1 miles) the bed of the Ocean Shore Railroad is cut 

 sea cliffs high above the water and affords not only fine shore scenery 

 but also an excellent section of rocks that probably belong to the 

 Martinez (Eocene) formation. The contact of these rocks with a 



mass 



Montara Mountain, a bold ridge that extends southeastward from 

 this part of the coast, is crossed by the raih-oad between Tobin and 

 Green Canyon. At the north end of Seal Cove, opposite Moss Beach 

 station (24.1 miles), the bowldery and fossiliferous sea-beach beds 



uig the base of the Merced 

 Montara Mountain are well < 



■» 



This delightful excursion may be extended do%\Ti the coast to 

 Pescadero, and the return made by stage across the range and rift 



wn 



to Santa Cruz and return across the range on the Southern Pacific 

 line either by way of the Big Trees and Los Gatos or by Pajaro and 

 Gilroy. 



The characteristic thin-bedded radiolarian chert of the Franciscan 



Hill, in 



Hunt 



Market 



most readily by the Kentucky Street cars from Third and 

 streets.^ The principal rock of the point is serpentine. A mass of 

 basalt hi tlie sea cliffs on the south side presents a remarkable 



and 



Tamalpais is very easUy and comfortably 



reached by ferry to SausaHto, electric tram to Mill 



mountam 



railway to the hotel on the top. The ferry trip is one 

 of the best to be had on the bay. The steamer passes close to the 

 smaU island of .Ucatraz, used as a mUitaiy prison. To the west may 

 be seen the ocean through the Golden Gate. Angel Island, with its 

 interesting glaucophane schists, serpentine, and other rocks, lies to 

 the right as the boat approaches Sausahto. The sedimentary rocks 

 of both islands belong to the Franciscan group and are chiefly 

 sandstone. The trip from Sausahto to Mill VaUey by the North- 

 western Pacific Raih-oad gives the traveler opportunity to see some 

 characteristic bay-shore scenery and particularly to note how the 

 waters of the bay appear to have flooded what was once a land vaUey. 

 MiU \ alley is named from an old Spanish sawmill, the frame of which 

 IS stiU standing. The views obtamable from the scenic raHwav and 

 from the summit of Mount Tamalpais are extensive and varied: To 



