Notices
Results 1 to 8 of 8

Thread: Alternative World Map (needing geographic advice for a hypothetical situation)

  1. #1 Alternative World Map (needing geographic advice for a hypothetical situation) 
    New Member
    Join Date
    Apr 2012
    Posts
    3
    Hi, Iím currently working on a map for an alternative world and I was wondering if anyone would be interested in helping me out.

    Having finished setting up the basic shape of the world, Iím trying to figure out how to place the worldís tectonic plates.

    Knowing very little about geography, I have no idea how to arrange the plates in a somewhat believable manner (Iíve attached what Iíve tried so far). While Iím not looking for 100% realism/accuracy, Iím still interested in having the map make some form of geographic sense (Iím planning to use the plates to help determine volcanic and seismic regions, weather patterns, and general temperatures).

    The plates ought to be arranged to permit the existence of the desert and mountain chain already illustrated on the map (although the way the desert is arranged could be changed). I donít mind changing certain aspects of the landmass as long as the two previous characteristics can be maintained.

    If anyone could tell me ways to arrange the plates (including their general direction and boundary type), I would be most thankful. Once I get the plates set up, Iíll be able to start fleshing out my map and add additional mountains and elevations. At the same time, I welcome any advice/criticism on the worldís current shape. I would also be interested to know what could be some expected effects of the map's current arrangement on the world's weather and temperature.

    Feel free to doodle on the maps Iíve attached.

    Map1.jpgMap3.jpg

    PS: The world Iím working on is supposed to roughly share the same characteristics as those of earth (eg: similar size, one moon, ect...). Also, for those interested, the map uses Mercator projection.

    (Example of a legend that differentiates the type of plate boundaries: File:Tectonic plates boundaries detailed-en.svg - Wikipedia, the free encyclopedia)


    Reply With Quote  
     

  2.  
     

  3. #2  
    New Member
    Join Date
    Apr 2012
    Posts
    3
    After working on the map for a bit, here is what I've come up so far.

    000_PlateMovements1.jpg

    000PlateMovements3.jpg

    Red lines are for relatively tall mountain ranges while orange lines represent shorter ones. Green arrows represent general direction of the plates while yellow arrows describe the interaction between the plates.

    I've yet been able to find an area where there would be transform boundaries. There could perhaps be one between plate 4 and 1b, 2 and 5, 10 and 6, or 8 and 9; although I'm really not sure if it would make sense to have one at any of these areas.

    I'm also unsure whether or not I should break down the larger plate (number 1) into 3 parts. Nor I'm I certain if the poles should be actual continents or frozen layers of ice. What would be the environmental consequences, if any, if both poles lay on their own plates or if neither actually had one (such as in the case of Earth's North Pole)? I'm also having trouble figuring out the direction plate 4 ought to have.

    As always, I'll be most grateful if anyone can provide me help with this or comment on the current arrangement of mountains and plates.


    Reply With Quote  
     

  4. #3  
    Moderator Moderator
    Join Date
    Apr 2007
    Location
    Washington State
    Posts
    8,325
    Just a few considerations.

    Consider not all tectonic plates are the light continental materials-- plate 8 and 4 would tend to subduct in collision with continental plate producing a deep offshore trench system and middling volcanic mountains on land along with geothermal earthquakes etc.

    Where the plates are separating you might have hydrothermal vents or even places where they peak above the sea level--like Iceland.

    Plate 12 would probably be an ice cap if the planet is temperate--or rather similar to earth. The "Arctic" has quite a bit of ocean passages with more Southern latitudes and probably not ice capped except in winter. To get into climate and biomes I suggest you lock down the geology, than decide basic orbital characteristics (length of day, tilt, type of star etc) before getting to the ocean*air currents from which we can make a good guess of climate and life.
    Meteorologist/Naturalist & Retired Soldier
    ďThe Holy Land is everywhereĒ Black Elk
    Reply With Quote  
     

  5. #4  
    Forum Ph.D.
    Join Date
    Aug 2011
    Posts
    985
    What are the prevailing wind patterns? Desert areas have to be explained. Usually deserts are in the "wind shadow" of a high mountain range. Deserts down wind of broad lakes or oceans don't make sense. The Atlas mountains generate the Sahara, the mountains of Palastine contribute to the Arabian desert. The Sierra Navada's and the Rockys generate the Mohave.
    Also large rivers have to have a correspondingly large drainage area.
    Reply With Quote  
     

  6. #5  
    Forum Ph.D.
    Join Date
    Aug 2011
    Posts
    985
    I'd really like to see your map. I read a lot of fantasy and sci fi and have frequently been annoyed by alternate world maps that just don't make geological or climatological sence. I remeber one particluarly bad one that had a large river between two mountain ranges in the middle of a continent and the wide plains on the othersides of the mountains had no drainage at all but were not suposed to be deserts.
    Reply With Quote  
     

  7. #6  
    Forum Ph.D.
    Join Date
    Aug 2011
    Posts
    985
    I'd really like to see your map. I read a lot of fantasy and sci fi and have frequently been annoyed by alternate world maps that just don't make geological or climatological sence.
    I remember one particluarly bad one that had a large river between two mountain ranges in the middle of a continent and the wide plains on the othersides of the mountains had no drainage at all but were not suposed to be deserts.

    I checked out your map and even limited as it is, I notice one major problem. There is too little Ocean area. It looks like half your world is covered by dry land. Earth is 4/5 water area. Your world will be mostly desert simply because of the shortage of evaporative surface. Also where is the equator and what is the direction of planetary rotation?
    Reply With Quote  
     

  8. #7  
    Forum Sophomore
    Join Date
    Dec 2011
    Location
    Wuerzburg, Bavaria, Germany
    Posts
    161
    Climate:

    Your climate should be available in an ice age, deserts today are at ~23į N/S

    Geology:

    Normally when there is subduction there is a very plain coastline but with a high topography, if no subduction there is a shelf coast. There are even very hypothetical suggestions which say that coastlines like this of southwest africa are not randomly as long as they are they state that this is a result of the any physical mantle parameters like viscosity and the heat transfer of the convectioncells in the mantle
    Reply With Quote  
     

  9. #8  
    New Member
    Join Date
    Apr 2012
    Posts
    3
    Thanks everyone for your replies. I’m currently reworking the map base on some of your comments. Right now, I’ve gotten really busy at work; however, within a few weeks, I should be able to post an improved version of the map and adequately reply to the various comments that have been posted so far. I will also try to provide a list of the geographic elements I’ve identified in regards to the world.
    Reply With Quote  
     

Similar Threads

  1. Angry at National Geographic
    By gottspieler in forum Biology
    Replies: 3
    Last Post: March 13th, 2009, 08:41 PM
  2. Mars Geographic Process
    By Vincent in forum Astronomy & Cosmology
    Replies: 3
    Last Post: April 14th, 2008, 12:32 PM
  3. What would be a good answer to this hypothetical situation?
    By westvaboi in forum Behavior and Psychology
    Replies: 3
    Last Post: December 1st, 2007, 09:34 AM
  4. members/guests world map
    By marnixR in forum Site Feedback
    Replies: 8
    Last Post: July 7th, 2007, 04:30 PM
  5. I need your advice .. World constitution
    By w1z4rd in forum General Discussion
    Replies: 5
    Last Post: July 12th, 2006, 08:46 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •