a visual case for contemporary formation of some rocks on mars

Upload: lyall-winston-small

Post on 06-Mar-2016

35 views

Category:

Documents


0 download

DESCRIPTION

This is a powerpoint presentation intended to illustrate some speculations I've been making on the MarsRoverBlog site. The speculation is that a number of images from the MSL Curiosity site can be interpreted as suggesting that "debris flows" are centrally involved in a contemporary production of layers downslope from certain rocks in Gale crater, Mars.The layers are formed by accretion of material from debris flows that arise from outflows from under rocks on slopes in gale crater.

TRANSCRIPT

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    1/22

    A VISUAL CASE FOR CONTEMPORAR

    FORMATION OF ROCKS AT SOMESITES ON MARS

    FROM DEBRIS FLOWS TO TERRACES TO ROCKS

    LYALL WINSTON SMALL

    NOVEMBER 2015

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    2/22

    I think there is a remarkable ongoing process of rock formation that is occurring on the

    The process is in clear view in several images from the MER and MSL rovers and ap

    most active process on Mars surface today but seems to be somehow invisible to

    This presentation, albiet with no geology underpinning, is an attempt to elicit reaso

    positive comments on the above from fellow MRB posters.

    The process appears to be made up of the following elements:

    a dark fluid flows down the slopes from underneath some rocks on elevated slopes

    The fluid congeals into a characteristic shape not far from where it originated

    More episodes of fluid expression leads to buildup of characteristically shaped lamina

    Groups of laminae form terraces downslope from the rocks where the flows origina

    Terraces develop into rock formations. Veins are probably involved in this process

    The cycle probably continues with new flows from below new rock formations

    process which must have a renewable energy source besides wind or gravity to

    decades and millennia.

    This alternative explanation suggests that such rocks on Mars are younger than currentl

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    3/22

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    4/22

    THE DEBRIS FLOWS

    The process starts with d

    flows emerging from un

    relatively high up slopes o

    or craters.

    GIF animations of the flow

    the drilling process of so

    Smugmug photosite, eg:-https://lws.smugmug.com/Other/MSL-Curio

    h3r9xSR/0/O/0615%20soil%20slips-crop3-x2

    The slide shows a phase where the subsurface flo

    covered by broken crust

    All images in this presentation a

    Curiosity raw images archives o

    Sol 627; 0627MH0003900000203473E01

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    5/22

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    6/22

    DEBRIS FLOWS EV POR TE ND FORMS SOLID RESIDU

    This is a close-up imag

    flow. Note the charac

    the leading edges of th

    remnants of the flow. characteristic of the su

    several rocks and othe

    surface of Mars.

    The flows characterist

    under a rock where th

    protective soil crust is

    Several examples of flo

    imaged by all Mars ro

    from the rover sugges

    movement is not the o

    triggers the phenomenSol 585; 0584MR0024410000400355E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    7/22

    DEBRIS FLOWS EV POR TE ND FORMS SOLID RESIDUE

    This is an area on the

    displays several flows

    shapes gives some idemight have been form

    They are formed

    after sublimation o

    They emerge from

    They emerge from

    by hardened earlie The flows are not

    wind erosion but

    and other attribut

    Sol 574; 0574ml2329006000e1_dxxx

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    8/22

    RESIDUE BUILDS UP TO FORM L MIN E

    New debris flows

    under rocks and som

    older solidified flow

    building up laminar l

    under existing earlie

    remnants. These re

    characteristic textur

    Note

    The origins of th

    Note the differetexture of the so

    the normal soil s

    liquid appearanc

    Note the accreti

    the beginnings oSol 1155; 1155MR0052190280601933E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    9/22

    RESIDUE BUILDS UP TO FORM L MIN E

    This slide shows the ty

    conformation of the d

    be seen in what appea

    chemical induration orflows.

    Note

    The appearance of

    liquid flows into th

    the foreground sit

    existing similarly te The V-shaped lead

    on adjacent sides o

    foreground sugges

    a result of fluid act

    erosion of some ty

    Sol 1033; 1033MR0045210160304175E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    10/22

    RESIDUE BUILDS UP TO FORM L MIN E

    This slide shows the c

    and texture of the indu

    placement downslope

    underneath which they

    It also shows the prese

    flows in the vicinity.

    The alternative explan

    somehow survived wi

    margins intact and stillshaped feature of the

    debris flows

    Some also appear to b

    fragile and unlikely to h

    of years of cycles of im

    exhumation by dust asSol 1059; 1059ML0046580020306158E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    11/22

    RESIDUE BUILDS UP TO FORM L MIN E

    This slide is anothe

    looks like relatively

    protected from win

    massive rock overh

    The new laminae, a

    be arising from flow

    under the nearby ro

    Note:

    Again, The topm

    appearing laminaseems pale and f

    lower lamina app

    sturdy

    There are a num

    looking objects u

    seem to have be

    Sol 1065; 1065MR0046870130104851C00_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    12/22

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    13/22

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    14/22

    TERR CE GROUPS GGREG TE INTO ROCKS

    This slide is included to

    of the upper side of a la

    the upper side of a rock

    dislodged and thrown osurface with its upper s

    Note:

    The shapes of the in

    rock surface are tota

    the lamina having be

    the accretions of mu

    debris flows over tim

    The edges of other l

    be seen

    Sol 1047; 1047ML0046000210306023E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    15/22

    TERR CE GROUPS GGREG TE INTO ROCKS

    This slide shows lamina

    might be in the process

    into rocks.

    Note:

    The dark colouration

    appearance of most

    The Vein that seems

    down the edges of t

    left side and might be

    process

    The debris flows on

    laminae

    Concretions at leadi

    flow

    Sol 1090; 1090MR0047860080600556E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    16/22

    TERR CE GROUPS GGREG TE INTO ROCKS

    The process of induration con

    Note The sub spherical concretions

    blueberries might be signs of m The more solid, harder, appea

    The textures on the surfaces o

    that are similar to debris flow

    indicative of having been form

    The relatively large spaces bet

    terraces

    Sol 751; 0751MR0032280630403655E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    17/22

    TERR CE GROUPS GGREG TE INTO ROCKS

    The process of induration con

    Note This massive rocks main mass

    I think veins might be anotherexpression of life in these imag

    function in the development o

    might be actually a veined stro

    The dark areas made up of ad

    laminae, covered by debris flo

    be in the process of formation

    Note the dark leading group o

    foreground is covered with wflow material or muds. This pr

    be now being formed

    It would be a strange erosive p

    leave that outgrowth there

    eroding the other portions of

    Sol 1157; 1157MR0052290140601973E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    18/22

    TERR CE GROUPS GGREG TE INTO ROCKS

    This slide shows an area wher

    can be seen downslope of old

    Are those terraces that seem

    out of the dark soil merely pro

    erosion of a rock which has un

    millions of years of erosion an

    seen peeping through the soil?

    Or could they be products of

    young process of induration o

    Oh if only Curiosity had a sho

    Sol 1087; 1087ML0047760190500020E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    19/22

    TERR CE GROUPS GGREG TE INTO ROCKS

    No shovel, but this slide show

    has been dislodged by Curiosi

    and affords a partial look at th

    Note: Shallow emplacement of ro

    Dark debris flows around t

    Debris flow coming from u

    portion of rock

    Eroded surface of rock (blu

    Broken layers under rock s

    consistent with debris flow Solid base of rock around w

    friable looking soil adheres

    Distinct difference betwee

    portion of rock and subsoi

    which is solid and immerseSol 1167; 1167MR0052840030602189E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    20/22

    TERR CE GROUPS GGREG TE INTO ROCKS

    This slide shows a rock that w

    and dislodged by Curiswhee

    Note:

    The roughly circular concathe portion of the rock left

    the left side of the overtur

    The layering around the w

    of the intact and the broke

    Layers are suggestive of a s

    The texture of the layers a

    the raised bluish rock on ththe image.

    The raised crust at the bas

    rock seems to be made up

    debris flows which were n

    by the force which upliftedSol 173; 0173MR0926103000E1_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    21/22

    THE CLIM X ST GE MERIDI NI TYPE P VEMENT SURF

    The final climax stage in the

    some martian surfaces mig

    in this slide, bottom right si

    A pavement of rocks, with

    planed to flat or domal sha

    from each other by channe

    dust that is rich in water an

    access to the underlying so

    rocks are emplaced and whmaterials and act as a niche

    Sol 1174; 1174ML0053240040502493E01_DXXX

  • 7/21/2019 A Visual Case for Contemporary Formation of some Rocks on Mars

    22/22