Help with Relative rotations to anchored plate

[abbzcreates]

Hello!

I’m following Artifexian’s guide. I’m trying to move a craton from its anchored plate, but when I try to change the poles, it always says indeterminate.

This is the relative relation pole:

Here is the rotation:
100 0.0 90.0 0.0 0.0 200 ! A at end
100 1000.0 90.0 0.0 0.0 200 ! A at start

200 0.0 90.0 0.0 0.0 000 ! B at end
200 1.0 32.397 68.7578 124.3015 000 !
200 450.0 32.397 68.7578 124.3015 000 !
200 500.0 42.2462 73.414 121.3356 000 !
200 550.0 52.0804 79.982 120.0534 000 !
200 600.0 75.5748 144.3933 108.0855 000 !
200 650.0 74.3829 113.3291 91.7698 000 !
200 700.0 79.7758 129.4205 77.1001 000 !
200 750.0 81.5208 132.8771 63.1501 000 !
200 800.0 82.5787 -132.0718 52.8904 000 !
200 850.0 77.7594 -70.5039 38.7772 000 !
200 900.0 58.5805 -86.9215 29.0814 000 !
200 950.0 61.2984 -88.8481 14.9056 000 !
200 1000.0 90.0 0.0 0.0 000 ! B at start

300 0.0 90.0 0.0 0.0 200 ! C at end
300 1000.0 90.0 0.0 0.0 200 ! C at start

400 0.0 90.0 0.0 0.0 600 ! D at end
400 1000.0 90.0 0.0 0.0 600 ! D at start

500 0.0 90.0 0.0 0.0 200 ! E at end
500 1.0 29.9551 49.7645 -109.738 200 !
500 550.0 29.9551 49.7645 -109.738 200 !
500 550.0 57.1958 -94.648 53.6155 000 !
500 600.0 37.6713 -76.7961 50.0402 000 !
500 650.0 23.9631 -79.0446 61.3282 000 !
500 700.0 21.1721 -82.6271 77.9347 000 !
500 750.0 32.357 -81.8998 68.7223 000 !
500 800.0 33.8161 -90.3794 54.4548 000 !
500 850.0 38.5936 -86.1442 39.4609 000 !
500 900.0 58.5805 -86.9215 29.0814 000 !
500 900.0 90.0 0.0 0.0 200 !
500 1000.0 90.0 0.0 0.0 200 ! E at beginning

600 0.0 90.0 0.0 0.0 200 ! Craton F at end
600 1.0 64.2507 -149.819 130.471 200 !
600 600.0 64.2507 -149.819 130.471 200 !
600 600.0 77.1339 -94.9646 -129.3412 000 !
600 650.0 78.1224 -103.6883 -113.7667 000 !
600 700.0 78.4232 -113.7845 -89.5311 000 !
600 750.0 75.3667 -119.0177 -75.3579 000 !
600 800.0 71.0118 -123.4867 -61.381 000 !
600 850.0 71.6649 -124.5104 -47.0818 000 !
600 900.0 69.0317 -152.4582 -34.1651 000 !
600 950.0 58.5402 -141.5833 -21.6539 000 !
600 1000.0 90.0 0.0 0.0 000 ! Craton F at beginning

700 0.0 90.0 0.0 0.0 000 ! Craton G at end
700 450.0 90.0 0.0 0.0 000 !
700 450.0 90.0 0.0 0.0 600 !
700 1000.0 90.0 0.0 0.0 600 ! Craton G at beginning, following

800 0.0 90.0 0.0 0.0 200 ! H at end
800 1000.0 90.0 0.0 0.0 200 ! H at start

900 0.0 90.0 0.0 0.0 600 ! I at end
900 1000.0 90.0 0.0 0.0 600 ! I at start

1000 0.0 90.0 0.0 0.0 200 ! J at end
1000 1000.0 90.0 0.0 0.0 200 ! J at start

201 0.0 90.0 0.0 0.0 600 ! Microcontinent 2 at end
201 1.0 64.0688 -141.346 137.922 600 !
201 650.0 64.0688 -141.346 137.922 600 !
201 650.0 37.354 147.0132 39.9909 000 !
201 700.0 36.4244 157.0615 20.4731 000 !
201 750.0 90.0 0.0 0.0 000 !
201 750.0 81.5208 132.877 -63.1501 200 !
201 1000.0 81.5208 132.877 -63.1501 200 ! Microcontinent 2 at start

501 0.0 90.0 0.0 0.0 200 ! Microcontinent 1 at end
501 1.0 75.9817 47.7652 -78.2916 200 !
501 730.0 75.9817 47.7652 -78.2916 200 !
501 730.0 18.9981 50.7185 -21.1585 000 !
501 740.0 19.0676 51.3157 -18.3943 000 !
501 750.0 19.1006 51.6057 -17.2965 000 !
501 800.0 90.0 0.0 0.0 000 !
501 800.0 33.8161 -90.3794 -54.4548 500 ! end following 500
501 1000.0 33.8161 -90.3794 -54.4548 500 ! end following 500
502 0.0 90.0 0.0 0.0 000 !
502 650.0 23.8194 -61.8143 61.8203 000 !
502 700.0 90.0 0.0 0.0 000 !
502 700.0 21.1721 -82.6271 -77.9347 500 !
502 1000.0 90.0 0.0 0.0 500 ! Microcontinent 2 at start

I’m trying to move 700, craton G from it’s parent plate Craton F (600)

Thank you!!!

[john.cannon]

It means the rotation is zero. It displays the rotation angle as zero, and so the rotation pole cannot be determined. In other words, any rotation pole will do (it doesn’t matter because they all don’t rotate).

Whether the rotation should be zero, I’m not sure. For 600->700 at 449.99 Ma, the plate circuit path will be 600->200->0->700.

Actually, I copied your rotations into a rotation file and loaded into GPlates 2.5 (on Windows) and I get a non-zero rotation.

If you have blank lines in your rotation file, try removing them and see if it helps - when I copy’n’pasted your post into my rotation file I had to remove them to avoid errors.