Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1905-12-16

| passes down from younger 10 older
| geologic formations, MS the general dip
I Is gently northward from the intrusive
core OF the Ia Sal Mountains and be-
/ meath the Green River basin. Leaving
! the Cretaceous shales, which form the
! nam surface Of the high-lyng Green
! River basin, one descends southwark
through yariegated bedded Cretaceous
sandstones, including Dakota Cretace-
Gus, into thick formation OF red beds,
| mainly sandstones These comprise,
/ both geographically and lithologicaliy,
| three part5--CD cliff making. well-bed-
| ded, br0Wnish-red sandstone, approx
| imately 1000 feet thick, with persistent
/ cross bedded members, underlaIu by CD
| merchandising, shady, dark-brown sand
! stone. several hundred feet thick, with
| alternately more and less massive re-
| sistant members, ana at the bottom go
| cliif-making thin-bedded. broWnsh-red
/ sandstone, with well-detined persistent
| sterilization. A cliff making, light
! plnkish- purple, shay sandstone. which
/ includes coarse cross-bedded sandetones
| and couglomerates, with wen-rounded
| granite ana porphyritic pebbles, UNDER
lies this series, with improved strait
| graphic relationship and outcrops on
! the banks OF the river and adjoining
| plains on the east. This formation APP
/ peared roughly conformuble with the
! everything sHndstones, but this point
wGs not specially studied and observa.
| tons We're insufficient to warrant any
positive statement In regard to it.
| Peale observed that ON Dome Plateau
| (Which oycrlooks the Richardson am
| phithcater from the wesD the lower
| portion Of the Jurassc formation Gov
/ crs considerable area south Of the
! ho-bacl that borders the Grand River
I valley at this place He further notes,
ana shows IN q section, that IN the vi
entity ~ the junction OF Grand and Do
lores rivers the Triassic forms the
greater uart of the surface, but that
the Grand cuts through both
lutassi' aud TIiassic and ex-
poses the t'arhou,feruus I'm the
canyon bottoms Tho general map
Of this region tSheet XIV, by Holmes,
iu the Hayden AtlnsD gives the area
included IN the Richardson amphthea-
Ter Ass upTer Carhonferous inciosed by
ANA dotted with iniiers of red beds Of
'Jera-Trias' age.
The stratigraphic relation between the
sandstone series and the underlying
oouglomeratic formation " significant.
IL no unconformty exists at this hort
20 II Is possible that the conglOmeratiG
=
glomorates OF the Dolores formation In
western Colorado. ON the other hand.
If an unconfOrmlty does exist here, the
conglOmerates may be correlated with
Carboniferous Conglomerates Of Colo
RADIO The final solution of this impor-
tant stratigraphic problem must await
detailed comparative study, preferably
by biologists familiar with the Colord-
do section.
The structure Of this series partakes
Of the general north northwest mono
cllnal dip Of the region. This Is inter-
rupted, however. by a zone of dcforma-
ton which enters the Richardson am
phitheater al the northeast, near the
mouth of Fisher creek, crosses in .
southwcsteriy course, indicated by breC-
cias and steeply upturned beds, anil
passes out on the southwest along n
zone marked by intense crumplng and
probable faulting Crumpng, fissur-
ing, and faulting on a small scale are
common throughout this zone. No
igneous rocks were found In place, al
though some are reported by prospec-
tors to occur about 10 miles south, on
Grand river, and about 10 miles south
east In the foothills OF the La Sal
mountains.
The deposits are chiefly compounds OF
Nsladium, including Vanadlo-arsenates
OF copper, barium, and calcium These
and perhaps additional compounds OF
vanadium occur In all instances OBJ
served, In aggregates of small. brittle,
green, greensh-yellOW, and yelloWish-
green crystals. individual crystals are
abour one sixteenth of an inch IN diam
IN pf
perfectly terminated fola or plates.
They are grouped parallel or Tadiate In
sheaves or wreaths. The light-oliVe or
acknowledgement varieties are distribute
ed ircegularly, while the darker green,
roughly circular crystals are usually IN
rosettos or wreaths. The olive and yell
lowisn crystals have a Enthusiastically
pearlS luster and the deep green ones
usually show a dull, waxy lustor, Small
oval masses of amorphos carnotte and
also small yellow crystals, slightly
darker than this carnotite, are init
mate,v associated with the green crys-
tails From his preliminary an
alyses, Doctor Hillebrand has de-
cided that one OF the minerals Is
n new variety OF CALICO volborthte,
highly arsenical. and another Is new,
hydrous, copper vanadate. distinct from
volborthite and calcio-volborthitc,
Occurrence of the Ores.
Both the vanndium crystals and the
associated amorphous carnotite occur
along the previously mentioned strong
northeast-southwest fracture zone, coat
Ing walls Of cracks and within certain
beds Of sandstone, The fracture zone,
3 TO % feet in width. is the main line
of reformation in the region. IL trav-
erses the country In a n. 50 degrees l..
direction, and dips to the southeast at
an angle Of 70 degrees
The rocks which It cuts are well bod
ded brownish-red gray, and white
sandstone, with little olive shale.
They dip generally to the northwest at
angles ranging from 50 to 80 degrees In
the immediate vicinity Of the fracture
they are shattered assured, and tnut-
ed, Faultlng on the main assure has
brought green shale In the foot wall
against gray sandstone ia the hanging
wall The sandstone dips normally to
the northwest. but the beds in the foot