customtaxonomyarchives.php

add_action( 'genesis_loop', 'cd_custom_taxonomy_archives' );
/**
 * Output the taxonomy name and an associated taxonomy image
 */
function cd_custom_taxonomy_archives() {  
  
	//print the page title
	the_title('<h1 class="entry-title">', '</h1>');

	// Code sample modified from example on http://wordpress.mfields.org/plugins/taxonomy-images/
	// This filter pulls similar results to get_terms(), except it also includes an image reference 
	// Only return parent terms
	$terms = apply_filters( 'taxonomy-images-get-terms', '', array( 'taxonomy' =>'your-tax-name', 'term_args' => array( 'parent' => 0 ) ) );

	foreach( (array) $terms as $term ) {
	
		// div wrapper for portfolio layout
		echo '<div class="post-type-archive-portfolio portfolio">';
			echo '<h2 class="entry-title"><a href="' . esc_url( get_term_link( $term, $term->taxonomy ) ) . '">'. $term->name. '</a></h2>';
			echo '<div class="portfolio-featured-image"><a href="' . esc_url( get_term_link( $term, $term->taxonomy ) ) . '">' . wp_get_attachment_image( $term->image_id, 'portfolio' ) . '</a></div>';
		echo '</div>';

	    }
	} 
}

Thank you!