610 



BULLETIN OP THE GEOLOGICAL SOCIETY OF AMERICA 



Page 

 LouDERBACE, GEORGE T>. : The chief 



features of the stratigraphy and 



structure of Mt. Diablo, California. 



(Abstract.) 537-538 



Lower carboniferous. Contact of Me- 



guma series with 106, 107 



— Devonic hiatus. Proof of 544-551 



— Huronian glacial period. The. . . . 355-356 



— Monroe faunas. Classification of. 545-546 



— portion of the paleozoic section in 



northwestern Xew York. By H. P. 

 Cushing 155-176 



— rampart anticline, Character of 318 



— Silurian, Meguma series supposed 



to be 100 



LowviLLE limestone. Character and 



thickness of 162, 163 



, Estimate of thickness of 168 



, Occurrence in Canadian section 



of 167 



McCoNXELL, R. 6.. cited on Tertiary 



beds of Porcupine valley 337 



— , Investigations i n Upper Yukon 



by 257, 259 



McElmo formation, Occurrence and 



character of 56 



McGeEj W J. cited on bolsons of north- 

 ern Mexico 72, 73 



— cited on playa deposits of the Basin 



Range structure 83 



— cited on sheet flood erosion 79-80 



— ; Outlines of hydrology 193-220 



MaddreXj a. G., cited on Tertiary beds 



of Porcupine valley 337 



— . Name "Coleen basin" given by. . . . 317 



Madisox limestone, Fossils of 413 



, General relations and character- 

 istics of 412-413 



Magnesium, Method of testing for. . . . 512 

 — , Presence in White Creek cement 



of 150, 151 



MaxsfielDj George Rogers ; Glaciation 

 in the Crazy mountains of Mon- 

 tana 558-567 



Maxsox, , cited on climatic changes 365 



Map : Gilder mound 246 



— of Crazv Mountain area 550 



Great Falls district, Montana... 341 



Mississippi river from Minneapo- 

 lis to Fort Snelling 37 



part of Oregon and California... 370 



Porcupine river, Alaska 321 



Theresa quadrangle 158 



Upper Yukon, Alaska 278 



• area 265 



Maps (geologic) of south-central and 



central Wyoming 403, 405 



— , Nomenclature on 14 



MARCor. J.. Meguma series regarded as 



Taconic by 100 



— , Reference to work by 112 



"Marexiscax," Introduction of term . . 8 

 Mariposa, Relation of Monte de Oro 



formation to 398 



Marquette district. Unconformity in.. 11 



Martix. . Comparison of Archean 



and Algonkian series noted by. . . . 1!) 



Marvixe, , Geological work In 



Michigan by 7 



Matawix district. Iron-bearing forma- 

 tion in 9 



Meck, F. B., Investigations In Upper 



Yukon by 259 



Meguma series. Comparison of Cam- 

 brian and 109, 110 



Ordovician and 108,109 



, Correlation as a criterion of age 



of 106, 110 



Page 

 Meguma series. Fossils as a criterion 



of age of 104-106 



of 102-104 



. Intrucenes as a criterion of age 



of 109. 110 



, Lithological resemblances as a 



criterion of age of 106 



, Occurrence of graphite in . . . 101-102 



lime in 101-102 



of Nova Scotia, Correlation with 



other groups of 100-110 



, Evidences as to age 



of 100-110 



, Opinions as to age of 100-101 



.Probable age of the.. 99-112 



probably pre-Cambrian Ill 



.References to literature of.. 111-112 



.Stratification of 108,109 



, Structure as a criterion of age 



of 106. 108 



. Unconformities as a criterion of 



age of 106. 107 



. Unconformity of lower carbon- 

 iferous with 107 



Mellor, , cited on Dwyka tillite. . 351 



Mexdel^ef, , Classification of ele- 

 ments by 122 



Mexdexhall, W. C. Investigations in 



Upper Yukon by 258 



Mexdota, Buried valley of the Minne- 

 sota at 37 



Mexxell, , cited on Dwyka tillite. 351 



Mesa de Mava. Location of 75 



Mesozoic, Fossils of the 304-305 



— , Occurrence in Yukon region of. 304-307 



— of Central Wyoming 403-474 



— plant localities. Map showing 370 



Meteors, Character of 125 



Mexicax Geological Congress, Papers 



on glaciation published by 365 



Mexico (northern). Bolsons of 72,73 



, Character of interment plains of. 73 



MiCHiGAX, Organization of state geo- 

 logical survey In 7 



MiCHiPiKOTEX district, Iron-bearing 



formation in 9 



Middle Silurian fauna of Porcupine 



valley, Character of 325-326 



Miller, A. M.. Discussion by 556 



Miller, W. G., cited on Huronian till- 

 ite 356 



— ; Grenville Hastings unconformity. 



(Abstract.) 539 



— , Report on pre-Cambrian of Hastings 



district by 3 



— , Study of Lake Superior region by. . 12 

 MixE I>eveloping Company of Cleve- 

 land, Silver ore presented by. . . . 93-98 



— waters and their field assay, by Al- 



fred C. Lane 501-512 



, Field tests of 509-512 



, Sources of 502-505 



, Various methods of testing. . 509-512 



MixxEAPOLis. Map of Mississippi river 



from Fort Snelling to 37 



MixxEHAHA creek. Discoveries of Dr 



Grant regarding flow of 31 



— . Evidences of falls at 38 



— falls, Gorges at 40-43 



— gorge. Formation of 41 



. Location and extension of . . . .'. 40-41 



MixxEOPA falls. Character of pebbles 



from 231 



MixxESOTA and Mississippi rivers. 



Cause of confluence of 35, 36 



, Contrasting vallevs of... 31-33 



, Map of 32 



valleys. Period of formation of 34 



— Mississippi valley. Evidences of post- 



glacial formation of 48 



